- Voice Actor (CV)
- Jin Ogasawara
- Gender
- Male
- Role
- Supporting
- Identity
- Shizuku's older brother, Yui's senior colleague at work, and an enthusiast of mountaineering and bouldering
Personality
overprotective of his sister
perpetually worried
athletic and cheerful
gentle and dependable
Kai Kusano is the older brother of the female lead, Shizuku, with a ten-year age gap between them. His dedication to mountaineering and bouldering has shaped his athletic build, giving him a bright and approachable presence. Known for his near-obsessive protectiveness over his sister, he frequently shows up out of concern for her well-being. He also serves as a senior colleague to Yui Hoshizaki in the workplace and harbors feelings for her. Throughout the story, Kai acts as a warm, supportive figure who bridges the relationships among the characters while keeping a watchful eye on his beloved sister.
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