Hunter's Mind Slug

Crossing over to the world of Hunter x Hunter.
The mind beast developed is a slug, healing treatment, telling the story of a boy named Ron who gradually becomes stronger in the Hunter world and goes further and further on the road of seeing people and curing diseases.
It is said that the strengthening ability user has the highest combat ability, but it is not true.
As a strengthening ability user, Ron's combat ability is very low, only "a little bit" of strength.
In addition, there is only "a little bit" of recovery ability.