Maybe bug : CG didn't seem to trigger on my end ?
I found the art extra good - but wasn't very much into the story (MC being good at everything but overall quite bland - without much reason to save grandma's store but for hazy memories...) and the ending felt a bit rushed - on Kia's end at least.
Because as it is it went this way for me : "MC retake grandma's shop because "why not" ; childhood friend come over -she did not recognize first- with her own problems but the two saves the day doing the shop thing. The end." Heh.
The story would have hooked me if there were more reason to take the store ; if MC had personal problems and urges or kirks, redemption because she'd wronged that beloved grandma ? Social awkwadness ? Glitched magic ? Weird molded ingredients ? I don't know ! Also if there were more bumps on Kia's route it'd helped to make things "unique". Make her angry, sad, making some great misunderstanding or silly huge dangerous project to save her race ! I don't know, just, shake the world, make the story be "the one that did that", not "yet again a romance story like the others". Marmaid could have a different livespan, or have cultural differencies that made a romantic relation super bumpy. Stuff. Original stuff and more bumps I say !