TV-Series
Description
Yuuya Mochizuki is a student in the ninth grade, class three, at Yomiyama North Middle School during the year 1998, and is one of the older members of the school's art club. He has a thin build and is slightly below average height, with a pale complexion and long, light brown hair that frames his face. His eyes are green. As part of the school uniform, he wears the standard male attire but typically does not wear the gakuran jacket.

Mochizuki is a quiet and observant individual, often keeping to himself and focusing on his artwork. His personality is reserved but not withdrawn; he shows a steady willingness to help his classmates when the situation demands it. He possesses a keen interest in art, particularly the works of Edvard Munch, and in the original novel is referred to by his friend Koichi Sakakibara as the Munch Aficionado because of his detailed knowledge of Munch's paintings, especially The Scream.

His motivation in the story is driven largely by the unfolding curse that plagues class three. As the mysterious deaths escalate, Mochizuki becomes involved in the efforts to understand and survive the catastrophe. He joins Sakakibara and fellow student Naoya Teshigawara in investigating the past incidents, including a search for a tape left behind by a former student named Katsumi Matsunaga, which contains clues about the calamity that occurred fifteen years earlier.

In terms of key relationships, Mochizuki is close to Sakakibara and Teshigawara, working alongside them as the group tries to piece together the truth. He also has a subtle romantic attachment to their homeroom teacher, Mikami-sensei, which is noted in supplementary material. Outside of school, he has an older half-sister named Tomoka Inose, who works at a local café.

Throughout the series, Mochizuki does not undergo a dramatic personality change but develops a stronger resolve as he confronts the escalating danger. He shows courage and loyalty, particularly when the group ventures into the old school building. His survival skills and calm demeanor contribute to his ability to make it through the tragedy; in the end, he is one of the few students who survives. In the epilogue, he and Teshigawara take proactive steps to leave behind warnings and clues for future classes, hoping to prevent the same cycle of death.

Mochizuki has no supernatural abilities, but his artistic eye and attention to detail occasionally help in noticing small details that others miss. His membership in the art club and his habit of drawing also serve as a subtle narrative element, reflecting his observant nature. Overall, he is a supportive figure who, despite his quiet temperament, plays a meaningful role in the investigation and resolution of the class's deadly mystery.
Cast