Tsuwabuki, Mitsuru
Summary
Mitsuru Tsuwabuki is a fourth-grader born on July 10th. He serves as Nanami's most devoted lackey, harboring an intense obsession with serving her and desiring to be viewed as her adored big brother. His dedication is so extreme that he is willing to put her in dangerous situations specifically to orchestrate opportunities to rescue her. The character does not appear in the movie adaptation.
