Unfortunately I think this one will have to remain unattributed.

For the sake of completeness, the artist is likely to be one of the following; Daisuke Satake, Hiroshi Nakamura, Masanori Waragai, Masahiro Miki, Masanao Katayama, Mai Hatsuyama, Yusuke Kato, Ryuji Baba, Kota Tonaki, Kento Koga, Tetsu Takahashi, Tsutomu Kitazawa, Wataru Kami, Yusuke Oda, Emi Kaneko