Hm you can debate if they are real sisters, because Kaga was planned as a battleship. Akagis real sister would be originally Amagi, but an earthquake changed fate. And by the way, they are shipgirls, so steam is a must have.^-^
They usually call each other sister, but in one of the lines in the anime sub they said they were like sisters, so... idk? Could be an inaccurate sub, but who can say with anthropomorphic ships.
^ I got a good one.
"Looks like that riding proficiency payed off"
"B-but...ah...I trained fffflying...oof...proficiency...ah...Wyverns are better..AAH FUCK!"
"Language, sensei~"
-25% energy
I think IS prolly ran out of time for more gay A support/endings. It wouldn't be the first time they cut content due to time.
I really want to see an earlier build/concept phase of this game.