- Voice Actor (CV)
- Mai Nakahara
- Role
- Supporting
- Identity
- Sota Tawara's eldest sister, a married expectant mother now living in Kochi Prefecture
Personality
Spirited drinker
Bold and assertive
Domestically challenged
Warm and dependable
Rinko Ooishi is Sota's older sister — a frank, free-spirited woman with a deep love for alcohol. After losing their mother at a young age, she stepped up to care for her younger brother, doing her best with household chores despite not being particularly skilled at them. Now pregnant, she frequently returns to her hometown in Kagawa Prefecture, offering Sota and Poko her signature blend of tough-love authority and heartfelt warmth.