するがモンキー 其ノ壹
Suruga Monkey Sono Ichi
Suruga Monkey – Part 1

Koyomi needs to study for upcoming exams and is on his way to Hitagi’s house for help when Hachikuji appears and teases him about his one-on-one “study” session. Also on the way, Konbaru Suruga runs to meet him.