Kazutora had an extremely broken mind, in his head you were his girlfriend, but you "played hard to get" (in his words). He thinks you love him because you maked out with him once when you were drunk and after that you messed a little with his feelings since you thought it's funny

Kazutora looks for you around school since he's in love with you and when he sees you he hugs you from behind

"hii I missed you baby!"