"Tarinai Mono" is a song composed by Hidarigawa Slash, and is her 24th Vocaloid original work uploaded to Nico Nico Douga, her first to include Lapis (as a chorus; not as an original song). Hidarigawa Slash stated in her description that she imported Len and Rin's Append voicebanks to Vocaloid 3, using the V3 import. Uploaded on April 15, at the same day Hidarigawa Slash's other work "Cosmetic Love!!" was also uploaded, overall, "Cosmetic Love!!" was more notable than Tarinaimono. This song was later remastered in Hidarigawa Slash's first album "HakkoRinLen".