Here is the first photoset of Jupiter, signed by the band!

It was first sold at 「stylish wave EXTRA '13 春の嵐ファイナル」 live appearance at CLUB CITTA in Kawasaki, Japan on April 21st, 2013 then at some following live appearances of the band during this "pre-debut" period.

My Jupiter Signed Photoset #1

It was the first time we could see ZIN's autograph. The design of the first letter makes me think of a thunderbolt, like the one the god Jupiter holds in his hand!

HIZAKI tweeted about this photoset here and showed a preview:

Preview by HIZAKI in his tweet on April 20th of first signed Jupiter's photoset