Bokura ga Ita

Synopsis

Yano asks Nanami out on a date but she blows him off, to spend time with her friends when instead she secretly went to buy him a present, but it isn't much of a secret because he follows her. Yano gets concerned because she lied about where she was going and who with, Yano's friend Takeuchi was there to help. The next day Yano is kind of mad at her but they are able to reconcile after exchanging gifts. Things are looking good between them, Nanami is able to recognize her deepening feelings for him. Yano continues to have flashbacks leaving the viewer to question the past between him and Yuri. In class, there is a seating change and this causes Nanami to question even more.

(Source: Wikipedia)