I knew about berserk, but was curious about the symbol.
Now that you mention berserk, it may have something to do with a manga character. Since I'm not any manga fan, I had to google it. It may supposed to be a crossbow or a person split in half as
@ericxia says, but it still rather resembles a couple of lit candles. Happy birthday anyway! :))
imgur.com/a/N0TsYxk