TV-Series
Description
Mitsuki Akika is the president and founder of the Singing Club at Tensho School, personally recruiting its first members. His inquisitive and elusive personality makes him difficult for others to comprehend or predict. Beyond club duties, he engages extensively with computer technology. Together with his older brother, he runs an app development company, which supports his discreet information-gathering activities within the school.

Physically, Mitsuki has long, light brown hair and teal (petrol) eyes. He wears Tensho School's dark blue uniform, buttoned in the middle, with a blue tie, white undershirt, dark blue pants, and dark purple shoes. He stands 180 cm tall and weighs 73 kg. His birthday is May 19, and his blood type is AB.

Despite his enigmatic aura, Mitsuki demonstrates reliability and responsibility as a leader. He operates under the principle that "the president's orders are absolute," commanding respect even from confrontational individuals like Ryo Saotome, who exhibits fear when Mitsuki is angered and cannot refuse his directives.

Throughout the series, Mitsuki engages in activities advancing the narrative's exploration of school mysteries. In Episode 1, he discusses the White Wall and the Seventh Ward with faculty member Washiho Usuki in the cafeteria, revealing he located a conduit to the ninth ward. Their relationship is informal, using first names despite their student-teacher roles. Mitsuki later acknowledges to Keishi Harumoto that Washiho lacks conventional faculty qualities. In Episode 3, he supports recruiting Saku Otonomiya into the Singing Club while delegating tasks to Satsuma and Ryo. In Episode 4, he conveys urgent news to Washiho about the sudden appearance of mysterious stones, comparing them to Stonehenge in a discussion with Koya Ashihara.

Mitsuki shares a close friendship with Keishi Harumoto, maintaining regular contact despite Keishi's reclusive tendencies. He values Keishi's insights about Tensho School, actively encourages him to socialize, and trusts his dedication to preserving the institution. Their collaboration culminates in Mitsuki declaring his commitment to protect the school at all costs.

Additional relationships include interactions with Hinata Mitsutsuka, Satsuma Kadonooji, and Ryo Saotome, to whom he delegates club responsibilities with statements like "I'm counting on you." He recognizes Saku Otonomiya's exceptional singing talent, directly praising his abilities.

His preferences include Asian cuisine and school-related activities, particularly computing. He cites his role as the Singing Club's faculty advisor as a personal challenge. Mitsuki performs two character songs: "White anemone" and a rearranged version of "Waiting for a Chance to Pounce."

The etymology of his name reflects his character: "Mitsuki" combines "water" (水) and "moon" (月), while "Akika" derives from "specimen, take warning from, learn from" (鑑) and "fragrance, fragrant" (香).