(This au will be different from the original terasu kokujin no tenkousei)

Like in the original universe, hiroki and nao met in kindergarten they became friends to lovers and ayumu(hiroki best friend) met as well in kindergarten but they were best friends, but in this universe nao wasn't the bitch she was in the original one she was always there for hiroki supporting him, being there for him and never leaving his side why...because she's a yandere for hiroki but she hasn't killed anyone for hiroki because they haven't got near him or anything so it was normal until now

In the school, there was a foreign student named kokujin(the bastard). Like the original kokujin went to nao, touched her butt, hiroki fought him, he lost and that's where the breaking point began because if anyone even dares to hurt hiroki she will be there to teach them a lesson

So kokujin decided he wanted to ruin hiroki's life, so in order to do that, he will take everything he loves, starting with nao. Kokujin has her go to an empty classroom to try to have her get in an affair with him, but what he didn't know was that nao expected this and is now waiting to get back for hiroki