Kōji Tabata is an adult male character featured in the series "Kobo-chan: Yume Ippai!!", distinguished by his black hair and central role within the Tabata family. As father to the protagonist Kobo Tabata and husband to Sanae Tabata, he embodies the conventional Japanese salaryman archetype, functioning as the household’s primary provider. The family cohabits with Kōji’s in-laws, Iwao and Mine Yamakawa, who support domestic and childcare duties. Their extended familial circle includes Kōji’s uncle, Takeo Oomori, a high school teacher.