Dropped.
I came back to read this because I've been letting it marinate for a while now but after seeing where this story is headed, I think I'll just spare myself from wasting time. I remember liking the early parts of this manhwa, but if we're going to end with a harem when MC explicitly says he doesn't want his future love to experience what his mom did, it'll just leave a bad taste in my mouth. Because why did we even have that plot point if it's going to be ignored anyways.
Nano Machine