Thought Acceleration

Thought Acceleration (思考加速) is an Extra Skill obtained by Kyoya Tachibana, likely through summoning. It is also the Sub-Skill of many other skills, namely Rimuru's Unique Skill Great Sage or Ultimate Skill Raphael. It significantly increases the user's thought processing speed. The acceleration varies from a few hundred times to millions of times depending on the individual.

Trivia

 * Rimuru cast this on Clayman, making the pain from the pummeling last longer.