Both Kurosaki Ranmaru and Kotobuki Reiji are part of the idol group, “Quartet Night” under Shinning Agency. Reiji can be a bit of a prankster and he enjoys playing tricks on Ranmaru, who is an easy target. Nevertheless, they have a good working relationship, as Reiji was the one who calmed Ranmaru down after Ren challenged Ranmaru’s authority.
I like how serene this photo looks, despite the light BL hints. I never thought they’d be paired together actually, but I guess fans of this franchise could have all sorts of pairings. Thanks to Clara for sending this in!
Source: Touya Hibiki on Twitter