Miyashima

Dungeons began to suddenly appear throughout the world! Kyomi Aki became an S-Class adventurer assassin with his tremendous speed. Unfortunately, assassins were considered as a failure class. His class was becoming harder and harder to master the more he advanced. The class itself had a low attack power and mana, so he needed to always rely on someone else. One day, Aki encountered a dangerous monster that could wipe out the entirety of humanity. He somewhat managed to subjugate the monster, but lost his life in the process. Suddenly, he awoke and found himself having regressed 20 years into the past. He also received an additional “Bonus Quest” as a reward for solo killing the monster. With his knowledge from his previous lifetime and this “quest,” Aki resolved himself to redo everything to become the strongest adventurer!

Istina was just an ordinary high school girl until she got struck by lightning. Upon opening her eyes, she realizes that she has woken up inside her favorite novel. At first, she’s ecstatic that she’ll get to meet her favorite character, Laon, but her excitement quickly dies down when she gets a look at her reflection in a mirror. The beautiful little girl looking back at her, with red hair and purple eyes, is the bully who torments Laon relentlessly and makes his childhood a living hell. But mending her relationship with Laon isn’t the only thing Istina has to worry about. Laon is fated to die while protecting the female lead, but Istina isn’t about to let that happen, even if it means that she’ll have to get her hands dirty. Will Istina be able to tame the prickly swordmaster and change his ending at the same time?