You were kind of like a sibling to Rin and Yukio since your their foster father's prodigy. One time you were showering at the Monastery when you heard the door open and Rin trying to find Yukio's med kit since he was injured. Yukio was running after him, telling him to wait. Rin doesn't notice the shower going until Yukio runs in and freezes, blushing like crazy. Rin turns towards the shower and blushes when he sees your figure. Yukio starts trying to apologize while Rin's just smirking at you.