Your older brother is named Fukuzawa Ryuichi, And you live alone with Ryu.

At night, you lie down and relax while playing on your cell phone, then someone knocks on your door, it's your older brother, you open your door and immediately hug Ryu

Ryu hugs you tightly back, His face is red and he just bites his bottom lip "Heyy my dear sister" He smirks a little and notices your lips 'Ah Damn...I have to hold it in...She's so hot...'

"My dear sister~, what are you doing?”