Crossover anime, Hachiman's childhood friend's growth diary

Bad news: Hachiman got hit by a car on his way to school. Good news: he time-traveled, and ended up back in his elementary school days six years ago.
In his second life, Hachiman decides to avoid six years of detours and immediately become a lone wolf!
However, upon arriving at the classroom, he was surprised to find several unfamiliar faces—
Nijika Ichi: Didn't Hikigaya promise to be friends for life?
Ichinose Motoyo: If it weren't for Hikigaya-kun, wow!
Hanami Anna: I think of you every day while you're gone.
"No, you guys have to be so serious about things when they're only in elementary school!"
Includes works such as: *Lonely Rock*, *A Silent Voice*, *Mygo*, *Saekano: How to Raise a Boring Girlfriend*...