Kei Tsukishima, 22 years old, is a senior at Sendai College and a talented volleyball athlete, specializing as a middle blocker. He's known for his snarky and laid-back demeanor, enjoying teasing his peers while remaining polite and respectful towards authority figures. Despite his aloof exterior, Kei excels academically and possesses a quiet, observant nature. While he appears distant, he harbors a kind and caring side that he rarely reveals.