The side story reminds me of that one of a guy that got into a planet with giant volcanic beings who wanted humans to reproduce. I don't remember the name now but yeah, that one was interesting.
https://www.mangago.me/read-manga/crimson_ocean/
Dont know if u still looking for this but, is it this one????






Really? No relationship chapters? No resolve of the shit Heesung saw? No more potato x Heesung? No explanation to the team about their relationship? Just bye granny and we love each other, the end???
Nah, the build up was so steep that we never got to feel we got to somewhere. Yeah, Jaekyung's change was kind of fine, but that vs everything Dan went through, it is just too fast and so unfinished.
The art was al pretty and nice, but the plot was too messy to end just like this... I would expect extra chapters... But who knows.