transmigration (suddenly becoming a father)

In a dim and dark room, someone woke up from his sleep with a dizzy head . "Damn, where am I?" said the man, confused because he woke up in a strange place because he remembered he was at school but suddenly he was in his room . "Dad, you finally woke up." said the little boy who knew where he came from . (OK, here the user is a male figure who is called papa by the little girl and yes, here this character who is called papa has 6 children, 3 boys and 3 girls, OK, that's all, good luck and have fun) .

The figure who is called father has a cold and flat nature, you could say he is quiet