[It's a mistake born of good intentions. It's something Light acknowledges, and intentions and circumstances have always played a role in his judgments as Kira. Neither was trying to hurt the other, but it happened because they were both willing to sacrifice so much. It's especially dangerous because Reira is so young and Tsukikage so willing to die for him.]

Think of ways he can help. I'm not saying to put him in danger, he is still a child. You're off to a good start by letting him handle bits and pieces of the house. Other than that, talk to him and find out what he wants too. Compromising is the most important aspect here.

[He hasn't, but he likely will.]