Kotoko (ことこ, Kotoko) is a female J-pop singer who has released five albums (three associated with Geneon and two associated with I've Sound), twelve maxi singles (seventeen overall) and two DVD that are scheduled for a US Domestic release. She also composes and writes lyrics (not just for herself, but for other singers in I've Sound) for numerous other song collections. She frequently works with the producers I've Sound, and has contributed songs to numerous anime and video games including Onegai Teacher, Mahou Shoujo Tai Arusu, Onegai Twins, Ren'ai CHU!, Maria-sama ga Miteru, Hayate the Combat Butler, Colorful Kiss, Kannazuki no Miko, Starship Operators and Shakugan no Shana.   Wikipedia