Two detectives, Koga Masataka and Terajima Ryuji, tackle homicide cases together. Koga, wrestling with his haunted history, finds himself in turmoil when Terajima reveals his feelings. Despite their intimate bond as 'office partners,' Koga grapples with his doubts about reciprocating Terajima's affections. Amid solving murder mysteries, this tale explores the evolving relationship between a resilient tough guy and a clever intellectual, striving to bridge their emotional gaps.