My love game with them that will lead to certain death

Ming Hai Toru got a simulated love system by chance. As long as he works hard to play various roles in the simulation and capture NPCs, he can get rewards and change his life as an unknown person. But the premise of the game is that he will definitely die at the end.
He eloped with the seriously ill Yukinoshita Yukino and escaped from the hospital, drove along the road to the sea, and finally gave his pancreas to Yukino, leaving her alone to live.
A body-swapping love comedy with her younger sister Eriri, forgotten by everyone during the midsummer fireworks festival, and embracing the incoming meteorites in a deserted town
In direct opposition to the end of the band, the bully who was afraid of social anxiety suddenly died in Yamada Ryo's arms on the eve of the band's fame. People only then realized that he was just trying to make Goto Ichiri
He is increasingly alienated from his childhood sweetheart, Mai Sakurajima. After she is cursed with reverse growth, he takes the responsibility for her without hesitation. The two people's time has been intertwined since then...
But after pulling himself out of the death ending of the game, he always felt that something was wrong...
Whether it's a lover, a brother, or a childhood sweetheart, it's just a setting in a simulation game. Why do you take it so seriously?