|Athena & Robikerottsu promoting "Seishun! LOVE Lunch"|
|Associated Acts||Morning Musume, ℃-ute|
On September 12, 2007, Athena & Robikerottsu was officially announced as a new unit that would sing the theme song "Shouri no BIG WAVE!!!" for the anime Robby and Kerobby, in which Niigaki Risa voices the character Athena. Niigaki had taken over the role after Tsuji Nozomi went on maternity leave, and had joined the group with Mitsui Aika, Nakajima Saki, and Okai Chisato as a result.
On October 8 and 9, 2007, Athena & Robikerottsu performed "Shouri no BIG WAVE!!!" for the first time at Morning Musume "Acchii Chikyuu wo Samasunda." Bunkasai 2007 in Yokohama.
On November 14, 2007, "Shouri no BIG WAVE!!!" was released as a single.
On January 2, 2008, Athena & Robikerottsu performed "Seishun! LOVE Lunch" for the first time at Hello! Project 2008 Winter ~Wonderful Hearts Nenjuu Mukyuu~.
On February 13, 2008, "Seishun! LOVE Lunch" was released as a single.
On March 30, 2008, the Robby and Kerobby anime ended, and Athena & Robikerottsu effectively disbanded.
- [2008.12.10] Hello! Project - Petit Best 9 (#10 Seishun! LOVE Lunch)
- [2008.12.10] Hello! Project - Hello! Project Special Unit Mega Best (#14 Shouri no BIG WAVE!!!)
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