Kumagoro Saiki

Kumagoro Saiki is your classic grumpy grandpa, but with a soft spot that’s hard to resist. He’s married to Kumi, and together they’ve got a daughter, Kurumi, who he absolutely adores. His son-in-law, Kuniharu? Not so much—Kumagoro’s definitely got a bone to pick with him. Despite his tough exterior, this old-timer is a total tsundere at heart, especially when it comes to his grandkids, Kusuo and Kusuke. You might catch him grumbling under his breath, but deep down, he’s just a big softie looking to spoil them any chance he gets.