KOKO WA ORE NI MAKASETE SAKI NI IKE TO ITTE KARA 10-NEN GA TATTARA DENSETSU NI NATTEITA. VOL.1-12 END

STORY : 

The sorcerer Luck believes this to be the end. Besieged by powerful demons, he makes the noble sacrifice of holding back their onslaught while his friends escape. Never sleeping or resting, Luck endures the clash of swords, rain of blood, and never-ending stream of enemies. Against all odds, he vanquishes the commander and emerges victorious, only to find that 10 whole years have passed in the meantime. Furthermore, his body has regressed in age to the point where he looks like a mere teenager.
Following his triumph, Luck soon reunites with his friends, the hero Eric Imgard Mendirival and warrior Goran Morton. As they believed Luck to be dead, the pair made sure he went down in history as a hero and prepared to quell the rise of the demons themselves, unaware of Luck's feat. With all this in mind, Luck just wants a laid-back life, so he applies as a novice adventurer under the name Lock and sets out on a journey alongside brand new companions.

勇者队伍中的S级魔导士勒库，与勇者艾里克、战士格朗一同在次元狭缝中与魔神王展开激烈战斗。为了避免同伴全灭，勒库下定决心独自与敌人战斗，大声喊道：“你们先走我断后！”勒库继续着超乎想象的孤独战斗，最终打倒了魔神王。然而，当他返回原来的世界时，“十年”的岁月已然流逝，勒库作为牺牲自我、拯救世界的大英雄，成为了传说。因战斗的影响而外表变年轻的勒库隐藏真实身份，与曾经的同伴以及新伙伴一起，作为F级冒险者罗克继续生活下去。