Hillside is the game I have supported financially for the longest time. The story of the game, especially the beauty of the character "Charlotte", impresses me. Also, have the friends who complain that there is no "sexuality" in the game never played the game? There are quite a few sexual and sex scenes in the game.
The sex scenes are currently limited to a few specific characters (Lucy, Kaylah), so if you are a fan of Charlotte, Suzi, or Emma, as LIs then yeah you will be somewhat disappointed. Fox, if I recall correctly, isn't supposed to have a path so she seems to be a dead end. Emma is just starting to realize, via her drams, she has feelings for MC; Charlotte is opening up to seeing a future with MC; and Suzi is... well Suzi.
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It's a slow burn, but a very well done slow burn for those characters. Jumping straight into lewd scenes with Emma just wouldn't work in the early days of the story, knowing Emma and Charlotte in those early days just wouldn't work.
The characters are very well developed, and each is very different than the other. There's no cookie cutter characters, other than the usual trope they fit into (evil villain, angry evil henchman, naive young lady, traumatized person/woman, etc.). But they are well done within those. Emma's initial naivety really irritated me at times, but as you see her grow out of it, it's like watching a whole new character show up.