Great to make a game that expresses the author's feelings but it feels really rude to write off everyone else's works as "so tropey" especially when there have been asexual options and inclusion in western dating sims for over a decade!
Sure, it's not every game, but it's hardly unheard of. VNDB has a tag for asexual characters and lists MORE THAN A HUNDRED of them, and those are just characters in modern settings that officially use the label.