Bokura ga Ita EP17 - Episode Seventeen

It's a normal school day, following the school festival and Nanami decides to get back together with Motoharu but under the condition that he tells her all about his first love, Nana. The two go out on a date but Nanami brings along Takeuchi, in order to get Motoharu to spill. Instead of learning something about Nana, Motoharu ends up telling her about his late father.