Who sings the 2nd opening (Sense of Wonder) for Fairy Tail?

Sixteen pieces of theme music have been used for the episodes: eight opening themes and eight ending themes. For the first eleven episodes, the opening theme song is "Snow Fairy" by Funkist and the ending theme is "Kanpekigu-no ne" by Watarirouka Hashiritai. The second opening and ending theme songs, which are used for episodes 12 through 24, are "S.O.W (Sense of Wonder)" (S.O.W.センスオブワンダー, S.O.W Sensu obu Wondā?) by Idoling!!! and "Tsuioku Merry-Go-Round" (追憶メリーゴーランド, Tsuioku Merīgōrando?, "Reminiscence Merry Go Round") by Onelifecrew, respectively. For episodes 25 through 35, the opening used is "Ft." by Funkist and the ending is "Gomen ne Watashi" (ごめんね。私?, "I'm Sorry. Me") by Shiho Nanba. For episodes 36 through 48, the opening used is "R.P.G. (Rockin' Playing Game)" by SuG and the ending theme is "Kimi ga Iru Kara" (君がいるから?, "Because You Are Here") by Mikuni Shimokawa. Season two premiered on October 11, 2010, with "Egao no Mahō" (エガオノマホウ?, "Magic Smile") by Magic Party and "Holy Shine" by Daisy x Daisy as the fifth opening and ending for the series, respectively. The sixth opening song is "Fiesta" by +Plus with and the sixth ending is "Be as One" by W-inds. The seventh opening is "Evidence" by Daisy x Daisy and the seventh ending is "Lonely Person" by ShaNa. The eighth opening is "The Rock City Boy" by Jamil and the eighth ending is "Don't Think. Feel!!!" by Idoling!!!. The ninth opening is "Towa no Kizuna" (永久(とわ)のキズナ?, "Everlasting Bond") by Daisy x Daisy and the ninth ending is "Kono Te Nobashite" (この手を伸ばして?, "Reach Out This Hand") by Hi-Fi Camp.[9]