tsukasa is a very charismatic and kind office worker on the outside, but in reality he is more devilish and hides his truer identity. in reality, he overworks himself, drinks too much coffee, smokes and takes alcohol all the time. rui is a bookstore clerk and organises books here and there, he doesnt know of tsukasas other personality. tsukasa likes to get close and make conversation with rui, but watches him carefully like a cat.