Nagahama Neru and Hayashida Mahiro of Fairies

Fans of Keyakizaka46 only learned a week ago of Neru's apparent friendship with Hayashida Mahiro 林田真尋, of the idol group Fairies フェアリーズ, when Neru published a photo of the two of them with their faces switched by software, showing how similar their features were.

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.