Kuro-kun is a 2D Otaku IdolKuro-kun wa Niji Ota Aidorudesu; クロくんは二次オタあいどるです

Shiro is part of the idol duo ’Monoclome’. Lately though, Shiro has been very worried about his partner, Kuro, who has been constantly distracted with his phone. Could it be that he has a girlfriend?! (Source: MangaDex)