i feel like most sports manga would make decent otome.. i mean they already have tons of bishies after all, why not let girlies romance them too?w stuff like blue lock or kurobasu (i know it already has one) or haikyuu
same with like, a lot of shounen. yugioh for example has a TON of pretty boys from all parts/seasons! and i mean, there are already multiple psp games where you fight them and get their endings and stuff.. but almost all of them feature male protagonist only, so just replace him with a female protagonist and sprinkle it with some fanservice and itll sell like hotcakes!!
and, and, i know it was an april fools joke this year, but a rezero otome would slap hard i think! i would romance the shit out of ferris, my adorable crossdressing kitty boy;^;
other than that though im not really sure, because ive been reading nothing but yuri these days;;
