The vocalist, ASAGI recovered from disorder of jaw and created the title song of this single "Happy Unbirthday" during his recuperation.

Type A of the single includes a bonus DVD with a music video of the title song and its making-of, while Type B comes with a deluxe booklet. Type D is a special-priced version.

CD Maxi Happy Unbirthday [w/ DVD, Limited Edition / Type A]
D
1800yen
- September 16, 2015
- No longer available
Limited Edition
CD Maxi Happy Unbirthday [w/ Deluxe Booklet, Limited Edition / Type B]
D
1800yen
- September 16, 2015
- No longer available
Limited Edition
CD Maxi Happy Unbirthday [Regular Edition / Type C]
D
1200yen
- September 16, 2015
- No longer available
CD Maxi Happy Unbirthday [Limited Edition / Type D]
D
777yen
- September 16, 2015
- No longer available
Limited Edition

[Special Bonus Offer]

We will send a special slipcase to customers who purchase all the four editions of the single "Happy Unbirthday" in one order. The slipcase can house all the four titles. This offer ends when the bonus runs out.

The band is now on tour starting from August 29, 2015. Don't miss it, too!