Beri Walter.
He stood in the alleyway after the explosion.
Mages from the Mage Tower in Copenhagen had come to investigate, deducing that a delayed Flame Explosion Spell with Extreme Effectiveness Metamagic had been triggered.
This was a Spell Formula infinitely close to the seventh ring, yet it possessed the lethality of a ninth ring spell, and… this Spell Formula was only circulated within the Mage Academy and assassin temple of the Eastern Elven Territory.
This meant that at the moment in Copenhagen, there very likely could be a Grassland Elf assassin master with the power of a seventh ring mage in action.