>>280055742 (OP)Yeah?
All shitposting aside, making the pairing homosexual gets rid of the gender barrier. Plenty of scenes in Witch of Mercury cannot be done with a male MC such as Miorinne pushing Suleta to be stronger and Suleta feeling left out by Mio's constant focus on efficiency.
If that were heterosexual, it would be Mio who is the man bullying a shy girl around. But it wouldn't make sense as Mio is treated as the grand prize for the champion
So yeah. Introducing a yuri pairing pushed the cast to have levels of intimacy that are near impossible to achieve in a heterosexual romance