I get what you're saying, but I feel like it he is not actually that lazy. He is willing to do the work when asked (or forced) and it is just he found his passion in games and that is the most important thing to him as of right now . Also FL helped because she saw his mom was feeling pain in...
For the memory, he is touched she remembered but wants to act cool about it. Of course he freaked, he saw her naked the previous chapter and saw a panty-shot in this one, it is honestly no different from most romcom MLs reactions. Also you read yancha gal no anjou-san, do you honestly believe...
What are you talking about? He talks pretty honestly with her for the most part. It is just you know he is shy now since he obviously developing a crush for his childhood friend. That's pretty standard for Romcom shy MLs.
I did not expect his backstory to go the serious route.
Seriously, if the stepson talks about having to face depression before he got into Monsura, we might have to start questioning if the author is planning a spin-off of Monsura.