I’m the only S-class summon RAW novel

A journey that lasted 100 years in the final labyrinth.
The moment when he loses all his comrades and finally himself.
Summoner Master Jin Do-yun, a message that flew at him.

[Achieve special conditions.] [From now on, you can tame S-class monsters.] [Do you want to tam Demolition of the Destruction Dragon?]

The thought didn’t last long, and Doyoon responded to the question.

[Congratulations!

Returning to the real world, he loses his mind.
Doyun clearly saw the message.

[Current Survivor: 3]

‘…… your comrades alive?’

In order to find his scattered companions,
Doyoon begins to fight monsters once again!