The Master-Disciple Turned Against Each Other and Actually Used Cthulhu

Have you ever seen such a strange Cthulhu? They actually faced each other in opposite directions. Moreover, they are still master and disciple, and they are not on the same level at all. But the two of them are together with each other and want to compete with each other. That's right, this world is not fair at all. They need to break this fairness and this rule, and then treat mediocrity crazily. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.