Cant remember the name of this manga

[Iceblade20]

Im trying to figure the name of this manga I completed long ago. I know it features a Male MC who can transform to a giant Sized demon monster who protects his city. Trying to find a cure for his little sister who also has this demon gene. also has a storyline, with a group of wandering teenagers with supernatural powers try to battle him.

If anyone knows the name of this manga, iD appreciate it.

 

[Reiru]

Im trying to figure the name of this manga I completed long ago. I know it features a Male MC who can transform to a giant Sized demon monster who protects his city. Trying to find a cure for his little sister who also has this demon gene. also has a storyline, with a group of wandering teenagers with supernatural powers try to battle him.

If anyone knows the name of this manga, iD appreciate it.

Maybe this one

https://mangadex.org/title/db8a48ac-6938-43c1-a02a-3b590f9c9d65/kiriwo-terrible

 

[Iceblade20]

Maybe this one

https://mangadex.org/title/db8a48ac-6938-43c1-a02a-3b590f9c9d65/kiriwo-terrible

Yup , this is the one . Thanks for the reply