Lightning exclamation mark of <i>BanG Dream!</i>.
™/® Bushiroad, CraftEgg, BDP
Vectorised by <a href="//commons.wikimedia.org/wiki/User:VulcanSphere" title="User:VulcanSphere">VulcanSphere</a> from <a href="//commons.wikimedia.org/wiki/File:BanG_Dream!_logo.svg" title="File:BanG Dream! logo.svg">File:BanG_Dream!_logo.svg</a>