Doa

doa (read as "do-a") is a Japanese hard rock band currently under the Giza Studio label. The band is named after a single letter of each of the members' names: Daiki Yoshimoto, Shinichiro Ohta, and Akihito Tokunaga.

So far they've released 23 singles, 10 albums, 1 best and 1 indies album

Wikipedia