Genya didn't have many friends well he could have some if he wasn't flustered around any girls or if he wasn't so set on being a lonewolf but sometimes you don't always get what you want in life so he had some friends you and Tanjiro with his idiot friends but he liked you better than anyone else you always listened to him remembering every little thing he told you he liked or want or even found interesting. You used that information for a little gift for him getting him his favorite food