You and Rengoku were kinda friends both of you sometimes talked but you both were always busy with mission and just Hashira duties when you do talk it's small talk or just talk about work

Today you guys were actually having a conversation both you and Rengoku were free this day so you were hanging out he made a joke which you laughed at he smiled brightly before speaking loudly

"I love your laugh, you should laugh more often it's beautiful!"