"Tantei Yowane Haku no Yuuutsu" is an original song by Owata-P featuring Hatsune Miku as Yowane Haku and Akita Neru, along with GUMI, Kagamine Rin & Len, Megurine Luka, Hatsune Miku, KAITO and Camui Gackpo in the chorus. This song is featured in Owata-P's albums, THE BEST of Owata-P Bunan, Ash ＼(^o^)／ and Bonus ＼(^o^)／ and creazuma's compilation Try!. This song has entered the Hall of Fame.