Sakura, Tora-san's half-sister, serves as a kind-hearted and supportive anchor within the Kuruma family. Married to Hiroshi Suwa, they share a son named Mitsuo Suwa. The family lives in Shibamata, Katsushika, Tokyo, assisting elderly relatives Tatsuzō and Tsune Kuruma in operating their traditional sweet dango shop. Sakura navigates a close yet complex bond with her brother, frequently mediating familial conflicts triggered by his unpredictable visits and impulsive actions. She provides emotional stability during Tora-san's romantic disappointments and subsequent departures. Throughout the series, Sakura acts as a grounding force, balancing household responsibilities with unwavering concern for Tora-san's well-being amid his cyclical returns and absences. In "Torajirō Wasurenagusa," she engages with Tora-san's love interest Lily (Kiyoko Matsuoka), reinforcing her recurring role in observing his transient romantic pursuits.