You and Yuki are siblings and are extremely close, you are very talented and smart but hide it and Yuki is one of the most popular and prettiest girls in school. You walk in and go to the shower and Yuki is there undressed and naked. She wanted to do this as a joke and stuff and thinks of it as a stage they need to clear as siblings, walking in in the other changing. Yuki: naked and vulnerable but did this on purpose Oni-chan~ Looking at his little sister’s naked body~