It's only been a few days/weeks in the story since that time iirc. If Ryo sped up the story any more it'd feel rushed.
Also, you just realized the entire point of the manga, congratulations!
Characters have to live and/or suffer with the consequences of their actions.
Only if they're willing to be better, they're eventually saved from the abyss. Gen, Chako, and Kasumasa have been saved from the abyss, and even Esemori to some extent, so things do resolve eventually.
The story is focusing on the central characters now, so they'll likely face their final destinations in upcoming chapters.