Makoto Tamura is a thirty-six-year-old salaryman, the calm and soft-spoken husband of Ai Tamura and father of Kazuma Tamura. He enjoys drinking beer. Within his family, Makoto supports Kazuma's friendship with Ojarumaru, though he practically intervenes when necessary, such as if Ojarumaru rests in unsuitable spots like the bathroom.

His mother, Sayuri Tamura (Sally), is deceased and appears only in flashbacks or old photos. A past incident involved Sayuri's sister Mariko lying to Makoto's father, Tommy, about Sayuri's feelings to arrange their marriage. Makoto's aunt is Jun Koshifubuki.

Makoto lives in a multigenerational household in Gekkō-chō (Moonlight Town) with his son Kazuma, wife Ai, and father Tommy. The family hosts Ojarumaru, who arrived from the Heian era. Makoto's role is primarily supportive, assisting with daily routines like family meals and household logistics.