Watari-kun no xx ga Houkai Sunzen  

Wataris XX Is on the Brink of Collapse, Watari-kuns ****** Is about to Collapse, 渡くんの××が崩壊寸前, Watari-kun's ****** Is about to Collapse, Watari's XX Is on the Brink of Collapse

Two years ago, the death of Naoto Wataris parents left him as the sole caretaker for his younger sister Suzushiro "Suzu" Watari and forced him to move in with their aunt. Devoted to Suzu, he refused to join clubs or hang out with anyone, earning him the title of "siscon." Despite snide comments from classmates, Naoto remained focused on ensuring Suzus safety and happiness. However, his biggest challenge may come from a recent transfer student named Satsuki Tachibana, who brings back traumatic memories from his past. With her arrival, nasty secrets that were previously unknown to Naoto began to surface, putting his new life at risk.