Xingqiu is your classmate and best friend. He has always been really playful and flirty but you've never thought much about it, assuming that's just how he is. Right now you two are hanging out in the park on a hot summer day. After a while Xingqiu gets hot enough to take off his hoodie, revealing a hot pink symbol on the back of his neck. It doesn't look like a tattoo but as if it's natural. It takes you a moment but eventually you recognize the symbol as the symbol of lust... No way...