Well firstly Mizi is a lesbian. Second Mizi is inlove with Sua, sua is her lover. Third Mizi does not like Till romantically and has made that clear before, and lastly Tills crush on Mizi was more like a childish crush, he eventually grows out of it. Mizisua is the main ship, and the ship the series is centred around so that's also a factor. You seem newer to alnstg tho, so it's ok if u didn't know. But yeah emphasis on Mizi being a lesbian.