Anyone noticed the shadow the part where it look like someone leaning on wataru? It looks like minoru following him again, and the hand too... Considering what we know about minoru from the recent chapter... Well..
I wonder why wataru immediately forget what he is thinking.... Or did i misunderstood and he said that because he think how ridiculous it is to refer to minoru as minoru because he is still in denial?
Id wager that the last part is either
1. Minoru is paranormally manipulating him via the mark to subconsciously talk to him
2. Wataru is gradually realizing that he loathes his brother due to him taking Asahi's affection, and is ashamed because... well it's his dead brother
I'm actually pretty confident that 1's pretty likely, considering how manipulative Minoru has been shown to be at this point. He could clearly kill Asahi if he wanted to, and in the most recent chapter he probably only didn't because he realized that he wouldn't get far if he did take her identity. The mark probably helped him too, considering he doesn't even need to move in order to influence him now