People get too hung up on the labels imo. Be who you want, love who you want. If you're not hurting anyone, then anyone who has a problem with it can go fuck a cactus.
It's noticeable how stereotypically masculine Hime-chan is, she's overly protective towards Akira and any situation she's not happy with she reacts with anger and threats. Akira being passive and non-violent is also stereotypically feminine behavior.