>>1663790
Hiori is wearing pink underwear in one of the images above, that said. Ruka doesn't appear in the games. in the case of Hiori and Mio, they appear in Blue Reflection: Second Light but of those two characters only Hiori is a playable character, Hiori wears the same underwear worn by Chihiro Inoue...surprisingly, and Mio probably wears Rika's underwear, considering that her lingerie is white and very simple. Mio is only mentioned in Blue Reflection Sun and I've never seen Hiori's underwear in that game, I remember that image of the low res ''pantsu'' of the characters in Blue Reflection Sun but Hiori wasn't in that image, so, who knows.