“Jan” is a slang term used at the end of an adjective or noun to make it sound more cool and casual. The selected members are quite young, but they possess the most matured images among Hello! Project Kids, according to Tsunku. Tsunku probably thought the fans would casually exclaim, “Sexy Otona-jan!” (Wow, these girls are just like sexy grown-ups! Way to go!) when they see the members perform in this new shuffle unit.
- [2005.06.22] Onna, Kanashii, Otona / Inshouha Renoir no You ni / Hitoshirezu Mune wo Kanaderu Yoru no Aki (オンナ、哀しい、オトナ / 印象派 ルノアールのように / 人知れず 胸を奏でる 夜の秋) - Sexy Otonajan / Elegies / Puripuri Pink
- [2005.12.21] Petit Best 6 (#12 Onna, Kanashii, Otona)
- [2008.12.10] Hello! Project Shuffle Unit Mega Best (#13 Onna, Kanashii, Otona)
- [2014.08.13] Hello! Project no Zenkyoku kara Atsumechaimashita! Vol. 5 (#9 Onna, Kanashii, Otona)
From Tsunku’s blog:
This unit has the best potential of all, in my opinion. The leading member is Miki Fujimoto, and I added 2 girls who possess the most matured images among “Hello!Project Kids”. My dream finally came true for the new unit with sex appeal, and I named the unit as “Sexy Otona Jan”. I personally want this unit to succeed for a long time, but it’s just my selfish opinion. Lol. The song is ‘bossa-nova’ style, which reminds you of the romantic summer nights that grown-ups would enjoy by the beach. Please indulge yourself in this atmosphere. Special thanks to Yoshiko Miura who provided the lyrics for this song.