Kikuko Kanbe
Daisuke's grandmother. She's a no-nonsense type—serious and stern, but clearly loves her grandson. What sets her apart is that she won't coddle him; she'll straight up call out his behavior when he's out of line. Fans note that she comes across as deeply rooted in traditional Japanese culture, like when she makes green tea for Haru the proper way, using a chasen and all that. Despite her tough exterior, it's obvious she genuinely cares about Daisuke, even if she shows it through blunt honesty rather than coddling.
Content compiled by AnimeList.moe from publicly available sources.