okay, so chapter 390 really made me realize why Touya apologized to Shouto. Also another note Shouto didn't hear that apology because Touya said it after he left. Touya knows he is dying so he Shouto won't get to mingle with him like he wanted.
ok so I've had some time to process the chapter and I think dabi's fate is supposed to be left ambiguous,which isn't that bad. Dr. Garaki said that dabi should have died along time ago and scientifically speaking it doesn't make sense for him to still be alive, so who knows? Maybe Touya will surpass this docs expectations. Maybe he won't.
After going back to it I see what you mean. I still wish we got a bit more of dabi's inner monolog however. The Todoroki family subplot focused on Endeavor too much at times.The resolution between Touya and Shoto simply felt too short.But well I suppose there is no changing that now.