I mean you can I think, you can just set the RO to male(if your oc are a girl) and female (If your oc are a guy). It's still only the prologue tho, maybe the creator might change some settings or sum
Hi! The MC and ROs are actually canonically gay, and this is a worldbuilding choice that won't be changed. As such, you won't be able to select female ROs for a male MC or viceversa. However, you can customise your MC's pronouns in any way you'd like.