KOUSHINCHOU NO KOUHAI (♀) TO TEISHINCHOU NO SENPAI (♂) GA RENAI NI HATTEN SURU MADE

A younger, tall, conceited female kouhai doing as she pleases towards her short senpai! A senpai who is teased about his height and treated as a kid...but unexpectedly shows a manly side of him! Will their relationship develop into romance...? — Description from AniList community (anilist.co).