....based on the pictures, damn, i feel kinda bad for the monster. spoiler below
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just based on pictures ALONE, my initial opinion is old guy is a jerk. he dragged the monster along then kinda dumps him for others. not sure what he was doing with the lady, thought he was gay, but I guess whatever feels good for him. monster dude looks lonely in the last few panels.
and then you got those dudes in hoods. dear lawrd, the drama.
Raw is on mangago as well: http://www.mangago.zone/read-manga/itsuka_kimi_ni_korosareru/raw/raw-chapter-373838
https://myreadingmanga.info/akabeko-rakka-jp/