ロッテンガールグロテスクロマンス (Rotten Girl, Grotesque Romance)

Background
The enamored girl. She has a bright laughter and her eyes are filled with madness. I've realized something. The song was originally uploaded onto Nico Nico Douga on July 21, 2009. It currently has more than 600,000 views on the site, making it one of Machigerita-P's most popular works. The song tells a story of a stalker (Miku) who is stalking someone who is dating another woman. It is featured on Machigerita's Fallen and the compilation albums EX:P ～Ex:Producers～ and GOTHIC & HORROR.

It's possibly a prequel to Psychotic Lounge.

Machigerita stated in a livestream he wrote the lyrics for the song while taking a train ride home, commeting that he sometimes thinks back and wonders what was going through his brain when he wrote it.