TV-Series
Description
Shinji Tokita towers at 190 centimeters, his muscular frame accentuated by short-cropped black hair with buzzed sides and thick eyebrows. This imposing third-year Mechanical Engineering student at Izu University serves as a senior member of the Peek-a-Boo diving club, physically overshadowing his close friend Ryuujirou Kotobuki.

His personality blends rambunctious energy with underlying responsibility. Shinji frequently barrels through the club's drinking and partying escapades alongside Kotobuki, often pressuring juniors like Iori Kitahara and Kouhei Imamura to consume large amounts of alcohol. Yet when it comes to scuba diving, he demonstrates genuine dedication, emphasizing safety and ensuring underclassmen receive thorough training.

Shinji shares a strong, comrade-in-arms camaraderie with Kotobuki due to their similar natures. He views Iori as a well-intentioned junior and maintains an easygoing rapport with other club members. Azusa Hamaoka harbors an unrequited crush on him, though she refrains from acting on it to preserve the group's harmony. Shinji also possesses a girlfriend, a fact that surprises others given his party-centric lifestyle.

He exhibits exceptional physical strength, capable of lifting peers like Iori with one arm and delivering tennis serves powerful enough to break rackets. A skilled diver with extensive knowledge, he readily imparts this expertise to newer members. Shinji also plays piano proficiently, demonstrated during a wedding reception performance alongside Azusa.

Across adaptations, his background remains consistent. In the live-action film, he retains his role as the dependable yet wild senior, though depicted with greater modesty (nudity reduced to underwear). His leadership within Peek-a-Boo and his dual nature—boisterous during parties but intensely focused during diving—remain central to his character.