Your story in a Demon Slayer part 1

Diagnosis results Sliyme was a simple human, but one day...When Sliyme came home, he/she saw his/her favourite pet, a rabbit called Mr Noodles getting eaten by a demon. This sight awaken a fire of primal hatered inside Sliyme, and he/she fought demon with a bare hands untill the sun rised and burned demon down.

That event made Sliyme hate demons. After recovering from shock, Sliyme realized that if he/she not going to do anything, something like that horrific event may happen again, and who knows if Sliyme will survive the next encounter with a demon.

Sliyme decided that he/she need to know more about demons and how to deal with them. Eventualy during the Sliyme research, he/she met a slayer, who appeared to be a Muichiro Tokito. After hearing Sliyme story and all the determination and zeal in Sliyme voice, Muichiro Tokito decided that Sliyme has a potential to become a slayer, so Muichiro Tokito offered Sliyme to became his/her sensei, and of course, Sliyme agreed. (Your sensei - your breathing style)

Training was tough, but Sliyme determination and zeal helped him/her to endure everything that Muichiro Tokito made Sliyme went through. At the end of the training Sliyme became much stronger and ready for the Final Selection...

Final Selection was hard, really hard. But by cooperating with other slayers and maybe a bit of luck, Sliyme managed to pass.
As Sliyme got his/her ore for nichirin, Sliyme asked it to be a...Nodachi.
After Sliyme got his/her nichirin weapon, it took a green color...