Romantic comedy with well selling idol and idol otaku!

Rooting for the super popular idol Moco Nanami is the reason for living for 17 year old idol otaku Sora Amano. Lately, he's been worried because his belongings have been going missIng.

In the middle of this, Sora pursued and caught a suspicious person that was running away with his smartphone - but the identity of this person - is his favorite idol Moco Nanami!?!!?