But fans of Mahiro-chan have seen pictures of her with Neru before. Here they are together from a Mahiro tweet on 7 August 2016:
You can see that Neru is wearing the outfit she wore in the KeyaBINGO episode where she flashed a come-hither glance that destroyed the hosts. Mahiro may have been at the Nippon TV studios when they were either recording or rehearsing that show. Fairies has done numerous NTV shows in the past. In the tweet, Mahiro said she had met Neru and that she loved her.