- Voice Actor (CV)
- Yuuichi Nakamura
- Gender
- Male
- Role
- Supporting
- Identity
- A 19-year-old second-year college student who works part-time at an izakaya in Shinjuku, and is the older brother of Yuu Oosawa.
Personality
Warm-hearted
Dependable
Ramen Enthusiast
Easygoing
Shuu Oosawa is the reliable and big-hearted older brother in the series. Balancing university studies with late-night shifts at a Shinjuku izakaya, he never forgets to treat his younger sister Yuu to a meal whenever he can. A self-proclaimed ramen connoisseur, Shuu has a particular weakness for niboshi-based broths. When he happens to run into Koizumi-san after a shift and the two bond over their shared ramen passion, his sister Yuu misreads the situation and suspects him of having a crush—adding a lighthearted misunderstanding to the story.