I kinda appreciate that it's getting revealed early-ish; I get really annoyed with how some other series drag it out and resort to increasingly improbable explanations that are way stupider than just admitting the truth.
A cute thing I just realized when re-reading; Rumi was too scared to go to the bathroom by herself, but when Akira needed her help she didn't hesitate at all to go back and get a change of underwear. She really is the best.
Maybe I'm a misandrist because Minato is pretty tolerable as a girlfailure yuri but if this was an equivalent hetero romance I'd find it so unbearable lol