So I didn't thought were else to post this but the most recent game in the series has added secret files that expand the series' setting and among one of them there's one pretty weird to call it somehow.
Notice written on the bulletin board of Snake Girls' School
Recently, there is impure homosexuality exchanges among girls on the school premises.
Our school, Snake Girls' School is a place where you can learn techniques and ambitions as a Shinobi, and it is not a place where you act a nasty act.
In the future, as soon as I find impure homosexuals, I will make a tough disposal. (Depending on the degree, there is a possibility of suspension or withdrawal)
There's also a letter from Daidouji to her mother that puts her interactions with Rin through the entire series in a new light. A sexy, gay, light.
To My Dear Mother,
No matter how many times you write me, I have no intention of returning home.
I have something I need to do, a promise with an old friend I need to fulfill.
I also have no interest in marriage, in spite of your continuous advice.