A music unit who performed live at singer Kiyoko Yasuno's 2nd live tour in 2019.
Named after Yasuno's song "Alien Boy."

Members
- Kiyoko Yasuno (vocal)
- Kento Ohgiya (band master, keyboards & backing vocal)
- Ken Higeshiro (drums)
- Manabu Chigasaki (bass)
- Kazuma Sotozono (guitar & backing vocal)
- Yasushi Mohri (percussion, guitar, backing vocal & manipulation)
- Karen (backing vocal)