World's Strongest Striver ～Blessed with the Unknown Aptitude for Effort Only I Can Muster Extraordinary Levels of Effort to Make Me the World's Strongest～

Also known as: Sekai Saikyou no Doryokuka: Dare mo Shiranai (Doryoku) no Sainou wo Sazukatta node Ore dake ga Dekiru Kikakugai no Doryoku de Saikyou ni Naru, 世界最強の努力家〜誰も知らない【努力】の才能を授かったので俺だけが出来る規格外の努力で最強になる〜, 世界最強の努力家 ~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~, Sekai Saikyou no Doryokuka: Sainou ga (Doryoku) Datta no de Kouritsu Yoku Kikakugai no Doryoku wo Shitemiru

by Marimo Enda, Hakuto Aono

In order to defend someone precious to him， he’ll use “Effort” to become invincible?! In this world, at twelve years old, all children have their “Aptitude” or special skill revealed which will guide them in the future. With cool Aptitudes such as “Knight” or “Wizard” being not uncommon, Rivelle is given the less-than-becoming Aptitude of.. “Effort”， which no one has ever heard of. His childhood friend, Anna, however, gains the Aptitude of Dragon Knight and with a vow to protect her, Rivelle strives to become the strongest in the world! (Source: Manga Mirai)