"Dammit. I never thought I'd hear those "cursed words" here of all places."
Summoning ceremonies can freely call forth even "those which lurk in the depths beyond the gods".
One boy has top-level abilities even among the cutting-edge summoners who can use those ceremonies.
He is the Unkilling King, Kyousuke Shiroyama.
But this strongest boy summoner has a single fatal weakness. Certain "cursed words" spoken by girls: "Help me."
When Kyousuke hears those words from Higan Meinokawa, a girl placed in the abyss of death, he throws himself into a city where three great summoner forces clash!
- Opening X-01: Lazy Beginning
- Opening X-02: Tense Beginning
- Stage 01: I Don't Do That Anymore
- Stage 02: The Rabbit is Alice's Guide
- Stage 03: Travel Back in Time to Approach the Truth
- Stage 04: There’s No Meaning to It
- Ending X-01: A Certain Parting and an Ending
- Ending X-02: A Certain Meeting and an Ending