Sekai Saikyou No Doryokuka: Sainou Ga (Doryoku) Datta No De Kouritsu Yoku Kikakugai No Doryoku O Shitemiru

The second half of the Japanese title 才能が【努力】だったので効率良く規格外の努力をしてみる translates to My talent was [effort], so I will try to make non-standard efforts efficiently. Chapter titles (using Google Translate): 1: 【努力】の才能 - [Effort] Talent