Seishun Wa Sankakkei No LoopSeishun wa Sankakkei no Loop; 青春は三角形のループ; Youth Is a Love Triangle Loop; Thanh xuân là một vòng lặp hình tam giác

it's a love story about the relationships between three childhood friends. A boy, Aiga Tsubaki, is in love with a girl, Chisato Himawari, who is also his childhood friend, but Himawari is in love with another childhood friend, Outa Tsurugi. In the first episode, Tsubaki, who is aware of Himawari's feelings, takes action in the hope that his two beloved childhood friends will become a couple. The accompanying copy reads, "This youth is in a loop..." and "A love story of a triangle relationship that repeats between three childhood friends."