My disciple has become the strongest human before I knew it, and I, a master with no talent, was mistakenly recognized as the strongest in the universe beyond that

Uchi no Deshi ga Itsu no Manika Jinrui Saikyou ni Natte-ite, Nan no Sainou Monai Shishou no Ore ga, Sore wo Koeru Uchuu Saikyou ni Go Nintei Sareteiru Kudan ni Tsuite; My Disciple Has Become the Strongest Human Before I Knew It, and I, A Master With No Talent, Was Mistakenly Recognized as the Strongest in the Universe Beyond That