The Fallen Hero Reincarnates as the Demon King's Son - Chapter 13 - 12 - History Has Changed

In a world where human and monsters relied on mystical fruits and their inner power to fight for dominance, a lost soul was thrown, given the powers from all the other worlds he’s known. But there was a catch; he had no control over what power he would get! With knowledge beyond that of most, he sails his path to the top of the one piece world!

- Description from Novelupdates

Mizuno Eiji, a siscon high school student, receives the worst news from his older sister: “I have a boyfriend now.”In order to identify the man who stole his sister, he follows her on a date and… sees a suspicious figure watching the two of them as well.That person is Hasegawa Aoi, his classmate who is famous for hating men despite being a beautiful girl!“I can’t believe you are actually a brocon.”“I never thought you are a siscon.”In order to make their beloved sister and brother to break up, the two of them formed a mutual relationship and went on a date as fake lovers while following the brother-sister couple… Aoi kissed Eiji on the cheek.“You’re the only one who is… special.”Brocon x Siscon, two people who shouldn’t be able to get along is actually a perfect match…!?

Let’s fight! Go! Who am I afraid of with a chip that turns into a brain cell? ! Get promoted and get rich! The nest treasures are all mine!

- Description from novelbuddy

[Beast Mastery][Summoning][Pets][Evolution][Development]Demon, Savage, Nether, Damnation, Mechanism, Soldier, Medicine, Abnormal, Witch, Immortal, Ferocious...This world is a world of monsters, filled with countless diverse “Fond Spirits”.But in this world, humans also wield the power of “occupation classes”. Once awakened, they can have Contract Imprints, allowing them to form contracts with the monsters, creating entirely new bonds.[For Instance]♦F-level Occupation Class “Manicurist”- helps the Fond Spirits trim their claws, making them beautiful, or sharper.♦E-level Occupation Class “Hunter”- marks and chases, closely collaborating with the Fond Spirits, the most classic hunting occupation class.♦C-level Occupation Class “Puppeteer”- manipulates Fond Spirits at crucial moments, making their strikes more precise and powerful.♦B-level Occupation Class “Midwife”- assists pregnant Fond Spirits with health checkups, giving random blessing effects to the newborns.♦B-level Occupation Class “Mechanic”- under the right conditions, modifies the Fond Spirits, turning them into semi-mechanical beings.♦A-level Occupation Class “Dragon Knight”- rides dragon-type Fond Spirits into battle. Man and dragon unite, becoming invincible.♦S-level Occupation Class “Arch Warlock”- intensifies the elemental properties of Contracted Fond Spirits and seals their skills in advance to execute forbidden spells for the second time....♦C-level Occupation Class “Fitness Trainer”...♦D-level Occupation Class “Flame Thief”...♦A-level Occupation Class “Mysterious Merchant”...♦B-level Occupation Class “Gourmet”...♦Special Occupation Class “Brave”......(I already have a completed work of 3 million characters titled “Master of Pets”. “The Rising of the Fond Spirits” is my second work, a Beast Mastery tale with entirely original settings, you're welcome to try it out!)