ATRI -My Dear Moments- - Season 1 - Eps 3: Hitman Small Fry School
Natsuki accompanies Atri who is on her way to school. However, when they arrive, they find that most of the school is underwater. Although they managed to get into the school building, inside it was full of empty classrooms and an unexpected teacher. There, Natsuki is faced with the saddening reality of the lives of the people who remained in their town.
About ATRI -My Dear Moments-

Title: ATRI -My Dear Moments-
First Air Date: 2024-07-14
Last Air Date: 2024-10-06
Status: Ended
Rating: 8.1/10 (from 15 votes)
Language: JA
Seasons: 1
Total Episodes: 13
Network: Gunma TV Tokyo MX BS11 Tochigi TV
Genres: Animation, Drama, Action & Adventure, Sci-Fi & Fantasy
Production Companies: TROYCA, Aniplex, bilibili
Synopsis
In the near future, a sudden and unexplained sea rise has left much of human civilization underwater. Ikaruga Natsuki, a boy who lost his mother and one of his legs in an accident some years earlier, returns disillusioned from a harsh life in the big city to find his old countryside home half-swallowed by the sea. Left without a family, all he has to his name is the ship and submarine left to him by his oceanologist grandmother, and her debts. His only hope to restore the dreams for the future that he has lost is to take up an opportunity presented to him by the suspicious debt collector Catherine. They set sail to search the sunken ruins of his grandmother's laboratory in order to find a treasure rumor says she left there. But what they find is not riches or jewels; it is a strange girl lying asleep in a coffin at the bottom of the sea, Atri. Atri is a robot, but her appearance and her wealth of emotions would fool anyone into thinking she's a living, breathing human being.
Cast

Kensho Ono
Natsuki Ikaruga (voice)

Hikaru Akao
Atri (voice)

Minami Takahashi
Minamo Kamishiro (voice)

Yoshimasa Hosoya
Ryuuji Nojima (voice)

Yoko Hikasa
Catherine (voice)

Anzu Haruno
Ririka Nanami (voice)