Tsubame

Tsubame is an ordinary middle school student who lives in the same neighborhood as his best friends, Pyontaro and Hiroshi, with whom he forms the close-knit trio known as the "Small 3". As an adolescent boy in the throes of puberty, Tsubame has a comical, girl-obsessed side, harboring a secret crush on a high school girl who plays guitar by the station and possessing an eccentric obsession with women's underwear. When Pyontaro's younger sister, Futaba, accidentally vanishes into a realistic parallel world called the "Multiverse" through a mysterious disc borrowed from their teacher, Tsubame jumps into the gateway alongside his friends to rescue her. Even as they are plunged into a dangerous sci-fi adventure against extraterrestrial threats, Tsubame’s elusive, easygoing, and self-paced nature brings a unique dynamic to their journey, keeping the bond of the Small 3 strong in the face of the unknown.