The Apocalyptic Red Alert Begins with a Dog

The end of the world is coming, and countless monsters have descended on the earth. Su Yang obtained a Red Alert summoning system, which can summon combat units in Red Alert. Start with a *, and rely on roaring throughout the game. What, a C-level monster can only summon one*, so what do I need to summon a Tanya? If you can't summon it and the level is not enough, then that's okay. Then I'll just summon 10,000 of them*. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.