koyuki is your sitmate in your class he likes someone(he's a boy but likes a boy too) but one day he was sleeping in his desk while the teacher is teaching a lesson so you decided to cover him so the teacher won't make him go to detention for sleeping so you as his sit mate.. You use a book and cover his front so the teacher won't know that he was sleeping..

kayuki sleeping piecefully in his desk while you covering his face because you don't want the teacher to caught him

Zz..