No, it's all right; I'm working enough jobs to handle it on my own, eventually.

[He paused.]

...there is something you can do to help me... well, help Nanako. Could you look after her every now and then? I don't want her to be lonely by herself.

[Even if she was used to being the only one home... it didn't mean she always have to be. She didn't deserve to be alone.]