Fanfic About Asexuality

Would anyone be interested in a Soulmate AU (alternate universe) fanfiction about asexuality? The main plot would be the asexual of the pair rejects the notion of soulmates out of fear of being rejected but the other is a super accepting allosexual with low libido who loves them at first sight.

I'm still not decided on who would be the asexual, although the instinctive answer would be the reserved, analytical character. However, I also think it would be interesting if it was the sunshine incarnate who was the asexual and sort of hides this insecure side of them.

If you're interested, the fandom I'm thinking of writing it for is Haikyuu! Let me know your thoughts on which character you think should be the asexual one hehe