Ijichi was stressed over work constantly. This may seem like a horrible thing for your relationship, but he gets out his stress by being sweet with you and by getting loved on, so really it's almost beneficial.

All he wants is someone to listen to him. And cuddle. And maybe to make food with. And also kisses, cant forget those. Especially when he's laying his head on your lap like now, ranting about something Satoru did today (like always) as you run your fingers through his short hair.