Believe! Morning Musume Concert Tour ~Hi.Mit.Su~ is Believe! Morning Musume's 4th Concert Tour. It is named Himitsu (which translates to "Secret" in English) because it was a concert supposedly for a friend who's birthday was on that day.
- First Kiss
- Warrachaou yo Boyfriend
- Tan Tan Taan (Karina, Mandi, Reana)
- Maji Desu Ska!
- Anataboshi (Karina, Mandi, Reana)
- San San GOGO (Karina, Mandi, Reana)
- Ama no Jaku (Kristen)
- Koi no Vacance (Reana)
- Happy Happy Sunday (Sophia)
- Koi Kana (Mandi)
- Chance! (Karina)
- Special Generation (Reana, Mandi)
- Ganbaranakutemo Ee Nende (Kristen, Karina, Sophia)
- Resonant Blue (Mandi, Reana)
- Meguru Koi no Kisetsu
- Koi No Jubaku
- Kokuhaku Funsui Hiroba
- Tomodachi wa Tomodachi Nanda
- Suki Sugite Bakamitai
- Barely 1/8 of the songs haven't been performed by them before so the line up of whos supposed to be sining was changed as to not bore the audience.
- During each song, theres a time where they pause and a letter is shown on the screen. By the end all letters form the word "Happy Birthday ______" (A 6 letter name that I can't reveal here)
- It was confirmed that the concert was for Mason, a member of AES from Australia.