Kotonoha Biyori by Sunahara Touko.
Hasebe Shuuichi x Yomura Kazuaki (Ono Daisuke x Kamiya Hiroshi)
My (really rough) translation.
Yomura: What is it? What’s wro-
Yomura: What’s wrong, Shuuichi, all of a sudden…
Hasebe: I just remembered something, from the days before I got to speak with you.