I really don't want to have a girlfriend.

However, this "ultimate goal of the mission" cannot be too easy, otherwise the system will not be able to obtain enough operating energy and will directly activate the self-preservation program, forcibly changing the mission to its built-in form, and will definitely make Yuu Tenkuji more unfortunate than ever before.

Don't ask about the principles; the answer is a lesson learned in blood—the ones who bled were, of course, those in those different timelines, some of them so tragic that even Kasugano Sora couldn't bear to recall them.

After all, if her brother suffers a terrible fate, she herself will likely not fare well either... That's how it is between the two siblings; to put it nicely, they are a community of shared destiny, but to put it bluntly, they are overly dependent on each other and can't do without one another.

If she, like Yuu Tenkuji, were to find a boyfriend outside and shift her focus elsewhere, gradually separating her sibling-like relationship from her romantic one, perhaps this situation could be improved.

Unfortunately, even if there were hundreds, or even thousands, of different timelines, this possibility would not arise.

Kasugano Sora sighed and continued, "Actually, I wasn't supposed to appear before you in this way and tell you the truth."

She spread her hands, pinched the wide sleeves of her white coat with her fingers and shook them, while intentionally or unintentionally puffing out her chest to show him how much she would grow in the future.

"However, I circumvented the system's rule that 'no one can provide any assistance to the host during the trial,' contacting you without affecting the trial's progress. Furthermore, I took advantage of that blond dwarf's mischief to expand my administrator privileges, allowing me to create this independent space and openly discuss these matters with you."

Seeing that Yuu's eyes remained unmoved, Kasugano Sora slumped her shoulders in frustration and curled her lips into a smirk.

"After this cycle, I will no longer be able to say 'things I wouldn't say as a minor,' so just think of it as role-playing and not being able to go out of character... Meanwhile, because the matter is related to that idiot who erased his own existence from this world, without my help, you will completely forget the existence of 'Tachibana Kanade,' just like before, even if you feel strange in your heart, you will never be able to recall it."

At this point, she put her glasses back on, and her eyes behind the lenses became serious.

Without flinching or dodging, the siblings' gazes met in mid-air, their emotions and thoughts intertwining.

"Therefore, this is the only chance you'll get."

"Yu, I believe you can do it. And you have to do it within the remaining half hour—"

"Please, give that super idiot who always likes to sacrifice himself an ending where he's no longer alone."

Countless cycles of reincarnation, countless moments of loneliness—it's a mystery how she managed to stay afloat without breaking down.

Just as she witnessed the past of Yuu Tenkuji, Sora Kasugano witnessed the past of both of them—in the end, not only he suffered misfortune, but also she, who failed hundreds of times but still did not give up changing her fate.

If there were any girl in the world who would have absolutely no objection to becoming his sister-in-law, it would probably only be this silly, yet heartbreaking, friend of his.

"……I see."

Tenkuji Yu nodded gently, accepting the weight of this affection.

It was not only for his sister, but also for himself.

He had made up his mind to find out about Tachibana Kanade's existence. Even if he didn't intend to rekindle their past relationship, he at least wanted to tell her—

Thank you for being there for me all this time, for my future.

As Tenkuji Yu said, he would complete whatever he set out to do, no matter how much time or effort it took.

Kasugano Sora gazed at him intently for a long time before a quiet, gentle smile finally appeared on her face.

"Well, I believe you."

"After all, Yu has never disappointed when it comes to seducing girls."

"...Sora, is this the right atmosphere to say things like this? I've never done anything to abduct a girl, have I?"

"I'm just telling the truth. Once you think back to what you've done in real life, you'll understand why I'm saying this about you."

Yuu Tenkuji: "..."

isn't it?

Could it be that in this timeline, I've really become a scumbag who seduces girls?

Seeing his incredulous yet somewhat guilty expression, Kasugano Sora suppressed a laugh, pursed her lips, took a deep breath, coughed twice, and spoke in a serious tone:

"Time is limited, so I'll speed up the video playback and tell you what will happen next from my perspective."

After confirming that Yuu Tenkuji had no objections, Kasugano Sora began playing the next video while recounting what she knew about what had happened.

……

In the next timeline, Tachibana Kanade and the "Scumbag Training System" descended upon Tenkuji Yu's side, and not long after landing, they sought out their former accomplice Kasugano Sora.

Having learned from her previous experience, she managed to get her younger sister into the "Saving Yu Front," a team with only two members, without much effort. Like a game development team, she worked with Qiong to test the modified system, identifying various bugs and areas for improvement.

Compared to the gentle and pure "Girlfriend Training System," the "Scumbag Training System" is undoubtedly much more extreme, almost as if it's deliberately leading Tenkuji Yu astray. It makes one wonder if this system was designed to take revenge on Tachibana Kanade, her "ex-girlfriend," and Kasugano Sora of this world...

If she hadn't received the message from the previous Kasugano Sora from Tachibana Kanade, she probably wouldn't have been willing to watch her brother turn into a scumbag in this world.

As for the result, should we say it was unsurprising or regrettable...?

Tenkuji Yu successfully became a scumbag, secretly dating five people at the same time, including one who accidentally got pregnant. This scumbag fact alone earned him many points and rewards from the system.

All you need to do next is confess to each of your five girlfriends once on graduation day to complete all the system's tasks, completely free yourself from it, and turn your unchanging fate in the past into an unknown direction.

Then he died.

His five girlfriends killed each other, and he didn't even have a chance to confess his feelings before being dragged to his death by the one who was pregnant with his child...

It's practically the ultimate level of despair.

When Kasugano Sora found out, although she was heartbroken, she couldn't help but curse that he deserved it.

Tachibana Kanade remained silent on the matter—she had asked Kasugano Sora to help collect data halfway through, while she buried herself in studying the system, not wanting to see her beloved turn into a scumbag.

Her heart was not numb after all. It was inevitable that her boyfriend would date other girls after her death. Even if she felt jealous, lonely, or envious, it was not unacceptable.

But to be involved with five women at the same time and get one of them pregnant... that's really going too far.

If I don't want my love for him to fade, I can only try to avoid seeing him.

After Yuu Tenkuji died, Kasugano Sora of this world took care of his funeral arrangements and prepared to follow him on his journey.

On her deathbed, she said the same words to Tachibana Kanade:

"Although I don't dislike you, and I even sympathize with and admire you... I still have this feeling that all of this is because of you."

"I know you're not the culprit, but can I blame You for being destined to face this fate? At first, he was just living a good life, so why couldn't he have what he wanted?"

"Since you are all innocent, then I can only blame you... I'm sorry."

"Also, this scumbag system is obviously the one I made last time to mess with your mentality. Next time, use the 'Heroine Conquest System' that I developed."

"Tell the next me... I've already categorized myself as the female lead. If I lose to those bad women out there this time, I might as well just go with him. I guarantee it'll be absolutely pure love!"

Thus, carrying her friend's last words and a revamped system, Tachibana Kanade once again embarks on time travel.

In each world, she would immediately seek out Kasugano Sora, asking her to become her ally. She would entrust her with the recorded data and the last words of previous generations. The two of them would repeatedly try to make various changes in order to save their loved ones.

The 105th attempt at the "Life Winner System" failed.

The 120th attempt at the "Strongest Male God System" failed.

The 150th attempt at the "Real-world Romance System" failed.

The 180th attempt at the "Talent Acquisition System" failed.

The 199th time...

The situation has not improved at all.

Even with Kasugano Sora as an assistant, even with the system changing its identity nearly a hundred times, and having tried every possible method, they still managed to succeed.

Yuu Tenkuji will still die due to various accidents before graduating from high school.

Faced with this desperate situation, Tachibana Kanade was disappointed but not desperate—after hundreds of years, she seemed to have long forgotten what it felt like to love Tenkuji Yu. However, a deep obsession was etched into her soul, allowing her to never stop moving forward until she achieved her goal.

She made a new decision once again.

If finding help won't help the current situation, then it's better to go it alone.

In this way, Kasugano Sora in the new world wouldn't have to know those cruel truths, wouldn't have to force herself to accept the fact that her brother died, and wouldn't have to blame herself for his tragic fate...

At the same time, as long as time rewind is activated at the moment of his death, his friends will not have to experience the pain of being separated from their loved ones by death.

So, for the two hundred and first time.

Tachibana Kanade stopped seeking help from Kasugano Sora and returned to the solitary days of adjusting the system on her own.

She kept trying and kept failing, but even though fate was as cruel as ever, she could start over with just one rewind.

She hadn't lost her true self, nor had she become numb; she had simply gotten used to it—like constantly using a first-rate character to challenge a demon king of the ninth level.

She grew accustomed to her own powerlessness, to the fragility of life, and to witnessing his various tragic deaths.

Of all these hundreds of "experiments," the only thing that Tachibana Kanade couldn't get used to and couldn't forget was probably the accident that happened on the 275th try.

The cause was a task she posted using the system.

Because of this mission, Yu's then-girlfriend, Tenkuji, got into a fight on the street with a woman with whom he had an ambiguous relationship.

The story ends with the woman being pushed into the road by the girlfriend and killed by a truck.

I won't go into how agonizing the events that followed were, but it still ended with the death of Tenkuji Yuu... What made Tachibana Kanade feel terrible was that that person could be said to have died because of her.

He himself had created the fuse that ignited the conflict, which essentially meant that he killed her, making his actions completely different from those of others.

Most importantly, Tachibana Kanade was quite impressed with this woman.

She appears in almost every timeline, and in each one she eventually develops an ambiguous relationship with Yuu Tenkuji—but that's about it.

She could never find love, and never even became a member of the harem. She was always a minor character, a nobody among passersby... a so-called "loser in love".

Although she's not blonde or has twin tails, and her tsundere personality is only a little bit, the reason she ended up in this situation is largely due to a problem with her personality.

Conversely, she was not caught up in Tenkuji Yu's fate. Except for the 275th timeline, she was able to live to the end safely each time. She grew rapidly in the sadness of heartbreak and her career flourished.

That's why the mission that led to her death is something that Tachibana Kanade, who is now indifferent to life and death, still cares about so much. Every time she appears, she feels a strange sense of guilt, as if she had personally ruined her life.

Even so, Tachibana Kanade only wrote it down and did not stop because of it.

The three hundredth time.

She painstakingly modified the "Life Achievement System," and Tenkuji Yuu also lived up to expectations by completing the first four missions. Without dating other girls or getting into a bunch of romantic entanglements, she quickly started the final trial.

After acquiring the system, the process went so smoothly it was almost like a revelation. He also unknowingly became more mature and stronger, learned to keep his distance from women, and focused on achieving his goals.

"I'm going to be the man who unlocks all achievements, and women will only get in my way!"—The man who said this was almost a completely different person compared to before.

At this moment, Tachibana Kanade's eyes lit up completely, and his once calm heart was now rippled with excitement, his long-dormant hope rekindled.

She saw a glimmer of hope for change.

Chapter Sixty-Nine: The Origin and Developers of the System

The final trial of the "Life Achievement System" is actually very simple.