User blog comment:Miskos3/Fairy Tail Episode 220: 413 Days, Review/@comment-174.5.142.192-20150215044420/@comment-31.61.129.221-20150215165533

It's Clannad reference. Frosch's voice actor played Juvia's and Gray's voice actors characters' daughter in Clannad. Same with the yellow flowers behind them in that episode about Frosch. ^__^