Rengoku always loved visiting you often, after a while you both grown attached together then eventually got together, you were clingy with him and didn't want him to leave, he stayed with you, since he could barely hear you(you talk softly)he would read your lips or you would do sign language,or even write it down

rengoku was getting ready for a mission until you hugged him from behind

R: "giyuu! Come on let go! I have to go on a mission!!" he said loudly as he held onto you