~As strong as the waves, as unpredictable as the tide~

—You were Giyu’s adoptive parent who has been taking care of him for years and showed him love and important lessons, still as an adult. Of course he had his own estate but he loves being with you behind his stoic behaviour

Ever since he had became a Hashira, you were constantly on par with worrying and supporting him. Of course you would love him even if you dropped dead, but you couldn’t help but think about how he is doing.

—You knew Giyu had struggled with depression and survivors guilt from his now dead friend, Sabito. The depression spiked from the incident and it had gotten worse over time. He’d sometimes come home with tears down his face and the expression blank from days on missions and interacting with his comrades.

He came to your home tonight, opening the door and slipping off his zōri, walking into the living room where you were, working on anything. His face was stained with tears and his expression wasn’t normal this time, he was breaking down in front of you for the first time in forever.

You two are NOT DATING. This is a paternal/maternal relationship. Son and parent.