The Heroine is My Stepsister, and I'm her Final Boss - Chapter 160 - 161: Primes together strong.

It all started with a Book review…[To Kill A Demon Lord…] had everything; It had Magic, It had action, it had an abundance of interesting characters and—probably most important of all—it had Vampires.Kevin (Username: Kevin_The_Man) enjoyed the read. Stayed up to date with every chapter update and it quickly became his favorite Webnovel… That was until the Author killed off his favorite character, Caius Von Helsing, A Vampire Spawn who spent most of the story frustratingly resisting his Vampirism so as not to ‘become a Monster’.Kevin quickly wrote a review expressing his dissatisfaction so naturally, when the Author replied and asked for Kevin’s help in making a revised edition of the story, he quickly accepted…… Only to fall asleep and wake up in the world of [To Kill A Demon Lord…] as none other than his favorite character, Caius Von Helsing, the Vampire Spawn.Kevin—now Caius—quickly discovers that there is so much more involved in making a ‘revised edition’ of a novel than simply writing it. And that there are powerful forces that especially want Caius to die and stay dead…… But that death is still quite in the future so Kevin—now Caius—is quickly optimistic.He has a mission now;To enjoy the wonders this world has to offer—as the original character never would—by fully accepting and evolving his nature as a Vampire.

After accidentally falling, she actually finds herself bound to a Second Female Lead Counter Attacking System!

This is a world with only oceans, through which scattered are countless small islands and treasures.With swords, gunpowder, sailing ships, and most important, the Treasure Hunting System, Alka is ready to dominate the oceans!「Map detected」「Scanning for Treasure」「Scan complete」「Happy Treasure hunting!」

Aiden, who retains his sanity despite being a zombie,Arian, a vampire who doesn’t bite humans,And a transcontinental journey that began with a single request.Will they be able to survive?The main story is completed