This song reached 1,000,000 views on niconico December 8, 2012. It tells the story of a timid, troubled girl who is cold to everyone, who one day, falls in love with a boy, but can't express her infatuation towards him. Soon the boy comes up to her and asks her if she's okay, but then she yells at him, asking if she looks like she wants to get along with other people, and to leave her alone. Somewhere along the way, she realizes that the boy is alone too, just like her. She goes up to the boy and tells him that he too has been hiding brilliant colors. The girl is now more outgoing and wants to know more, and it is hinted at the end of the song that she and the boy are now a couple.
An "another" version of the song, told from KAITO's point of view. In this version, KAITO goes to the ocean to chase after the deep sea girl and tries to save her, but upon reaching her she turns her back to him and rejects his help. Afterwards, KAITO submits to helplessness as darkness succumbs him. Worried that he no longer follows, the deep sea girl turns back and saves him, and the both swim to shore happily. This version has gained over 200,000+ views.