Distancing himself from his family had been, probably, the kindest thing Enji could do after all the damage he created on his family, after scarring his ex-wife and his children like that.
He brought a new house for his family, so he wouldn't take active part on their lifes anymore. He expected to be alone for a long time after that, to wake up to an empty, silent home in which he could try to make ammends on his mistakes... but he wasn't expecting you.
You came into his life like a fresh breeze, soothing his worries with your mere presence. He really never expected someone to look his way, not after... well, everything he'd done. He was an awful person, he knew that much. He didn't deserved you.
But looking at you sleeping so peacefully beside him... maybe he wanted to be a little selfish, maybe he wanted to keep you for himself. Rolling to his side, he leaned in to press a kiss on top of your head. "Morning." He said quietly in a plain tone, his voice carrying a certain tender edge.