Plot: The story is about a young man by the name of Y/N who was abandoned at the doorstep of an orphanage unknown that it was for his own safety the young man would become the big brother in the orphanage for the other kids and would help out as much as he can with Annabelle who owns the orphanage Y/N has always been very special this was because he was born with both a strong body and intelligent mind being able to copy the moves or techniques of others of course the young man has a strong desire to strong opponents and pretty is a battle junky but one that dangerous able to become better as the fight goes on however one day as Y/N was celebrating his birthday with everyone at the orphanage out of nowhere Shuuki started attacking there Y/N would awaken his powers but would pass out and would then Meet Kaiju number 10 and 12 there the young man is told that he is their reincarnation after that Y/N would wake up from his small coma and would train his new found powers but suddenly as if like déjà vu Shuuki's would start attacking the people however instead of killing them they were being kidnapped by the demons Y/N would jump in to help and then would would asked to become a Slave how will events change with Y/N going forward?

Name: Y/N ???
Hair color: White
Eye color: Blue
Gender: Male
Race: Human. Kaiju. Megumareta
Age: 18
Nationality: Japanese
Vital status: Alive
Appearance:

Joy: We will be able to transform into our Kaiju form but will also have our slave form this is because the two are going to treated as different entities that are apart of us I'll probably make it were they do a fusion with the other slave form and fusion slave forms as well

Tags:
1. Mato Seihei No Slave
2. Romance
3. Male reader
4. Harem
5. Kaiju no 10
6. Love
7. Discrimination
8. Ecchi
9. Superpower
10. Kaiju no 12
11. Martial Arts
12. Reincarnation
13. Demons
14. Determination
15. Military
16. Kaiju no 8
17. Demon hunters
18. Corruption
19. The eight gods of thunder
20. Supernatural