This is a "game" with only one target to win over, Zhe. Everyone else is a player trying to win him over. To make the task easier, the players will be the same age as their target.
[Hello, I'm an ordinary student. But on the day I became a high school student, the whole world changed. To be precise, I regained memories of my previous life, though at first all I knew was the plots of anime.
On the second day of school, I understood: all my classmates were anime characters.]
That day, all the characters from the world of anime were bound to a System. The System ordered them to win over a high school student. If no one succeeded, the worlds would collide and be destroyed. If someone did, they could make one wish.
So, on the second day of school, Class 1-A gained several transfer students. During the introductions, everyone could see each speaker's affection rating.
[Two Bowls of Plain Noodles: -100
The Captain: -100
The Fruit Farmer: -100
The Great Righteousness of Summer: -100
The Money Killer: -100
The Bandage-Wasting Device: -50 (20)
The Strongest: -50
The Conscience of the □□: -30
The Versatile Public Security Part-Timer: -30
A Certain Reaper Detective: -25
Megumi Fushiguro: 0
Itadori: 0
The World's Greatest Detective: 5
The Eternal High School Student: 6
The Cursed Technique Nurse: 8
Haruno-Style Rose: 10]
Theme: Don't give up.
Collecting firewood, lighting a fire, setting up pots, squatting pigeons