Story idea book part 1

MSNS: World's Greatest Hero Becomes An Unrivaled Soldier

Plot: Y/N Shinzo Yagi or now Y/N Shinzo has been reborn into a new world after having accomplished many great achievements and deeds in his former life as the number one hero in the world but y/n would learn that monsters called Shuuki's come from a place called Mato after learn about all of this y/n makes the decision of him becoming a hero again y/n would go around The Japan slaying Shuuki after Shuuki the people and the anti-demon defense corpse gave him the title"The Shuuki slaying King" and also exposing women who were abusing their Peach blessings becoming a hero to the people the government wanted y/n to be apart of the anti-demon defense corps but unfortunately y/n would always getaway as y/n did not want to be the government's dog but unfortunately y/n would soon find himself involved in a Mato disaster and since he could not put on his suit or else be exposed so he took out his sword and started killing Shuuki's and helping the people evacuate a unit came and Y/N was surprised to meet Himari his girlfriend but got back to the fight but saw that the situation was getting dire having no other choice the young man made the decision to use OFA after that incident Y/N manages to convince the seventh unit to keep his identity a secret but will the young man be able to keep his secret identity even though he knows full well that the truth will be known!?

Name: Y/N Shinzo
Hair color: Pink
Eye color: Red
Gender: Male
Race: Japanese/American. Transmigrator.  Kawatta. Human.
Age: 19
Status: Alive
Appearance:

Quirks: One For All

Quirks of OFA: Black Whip. Float. Danger Sense. Fa Jin. Smokescreen. Gearshift.

Occupation: Demon hunter. Vigilante. Boyfriend. Big brother.

Affiliations: The Mato Defense Corps. 7th Unit. Himari Azuma(Girlfriend). Shinzo family.

Suit:

Code Name: Kibo

Main Girl: Himari Azuma

Info: Y/N and Himari met during their junior school years Himari didn't like Y/N because of his gender and believing that every male was a dog who was perverted Y/N became the top student in the school with highest marks anyone has never seen before Y/N found Himari being Abused by her sister in law her calls her a failure and was about to go to far y/n stepped in and helped Himari with the girl being thankful to Y/N the two would become friends and Y/N would help Himari train and when the girl got her ability Y/N say that her ability is amazing and the two decided to become lovers and Y/N revealed himself to be Kibo and show off OFA and the other quirks and reveals that he is a reincarnated into her world then the day came when Himari had to go to work for the Anti-Demon Defense Corps but unknown to either Y/N and Himari the would be fighting on front lines and on the same Unit but unknown to them that other girls would get the relationship with Himari as the Alpha

Tags:
1. Mato Seihei No Slave
2. Male Reader x Himari Azuma
3. Ecchi
4. One For All
5. Isekai
6. Romance
7. Demons
8. Original Characters
9. Corruption
10. Blood and gore
11. Discrimination
12. Harem
13. Military
14. Jealousy
15. Determination
16. The Eight gods of thunder
17. Isekai
18. Demon hunters
19. Superpower
20. Mature