Yahari Ore no Seishun Love Comedy wa Machigatteiru. OP
(My Teem Romantic Love Comedy)
“Yukitoki (ユキトキ)” by Nagi Yanagi
used as OP for all 14 episodes (including OVA)
At first glance, neither the opening song nor the opening animation stands out. However, it is undeniable that both sound and animation flow nicely, and fit well with the “serene” slice-of-life theme of the anime.