Warning: This song contains questionable lyrics and themes; it may be inappropriate for younger audiences.
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Romaji: Warui Koto wa Shicha Ikenai yo
English: We Should Not Do Bad Things
Uploaded October 2, 2010, with 315,700+ Niconico views
This song is one of Kikuo's most popular songs. The lyrics are vague and open to interpretation, although popular interpretations include themes like child abuse, bullying, or a dead child warning other children not to do bad things so they won't end up dead like her; another popular one is human/child trafficking. The song is featured on Kikuo's first album KikuoMiku.