Funamusea/Deep-Sea Prisoner is the Japanese artist/game dev behind comics such as Obsolete Dream, Seaside Dispatches 1 and Seaside Dispatches 2 along with games such as The Gray Garden, Mogeko Castle and Wadanohara and the Great Blue Sea.
All Funamusea works take place in a single interconnected universe dubbed "Okegom" named after Mogekos, a prominent species of creatures in the universe. Funamusea is also known for having a lot of characters. As of writing this, Funamusea has 311 named characters listed on her website while the total number of characters exceed 500.
Her works usually cater to a mature audience with heavy topics taking place in some parts of her universe.
Guy 1: Hey, did you see the new Funamusea art?
Guy 2: Yeah! It looks so cute