Grandpa gonna die and MC gonna blame ML even though is not his fault grandpa is old and dying. Cue 5 more weeks/chapters of MC's 5 stages of depression.
The non-Finding Family chapters are non-canon, plus is really old stuff. I sincerely doubt author is going to put incest to the main story, bio or not.
Arisaka might be together with the Pharmacy guy. And I don't mean "together" together. I meant he's probably working with him on medicines. Perhaps he's working as the test subject?
It's getting pretty damn annoying