He was a assassin in his past life. (No more infor regarding that one.) Suddenly he want to become the world strongest monster even though he is the most weakest E- rank monster. Then something unexpectedly happened, he have a system that helps him grow to become the most strongest monster.
This is good but the story is too fast, no background, i think this is a sequel about something, but make sure to read it as well.
He was a assassin in his past life. (No more infor regarding that one.) Suddenly he want to become the world strongest monster even though he is the most weakest E- rank monster. Then something unexpectedly happened, he have a system that helps him grow to become the most strongest monster.
This is good but the story is too fast, no background, i think this is a sequel about something, but make sure to read it as well.