Herby had a weak immune system and even a cold, could send him to death. But his older brother, Rufus, only six, managed to save his brother thanks to the bone marrow donation.
Now, the family from Britain is looking for another compatible donor, since their older daughter, Wutney, 11, suffers from the same illness. Herbie, who plans to start school next year, said he was very happy that his brother did that for him.
Rufus, on the other hand, said that at first he feared a bit but now he feels like a superhero who managed to save his little brother. The family is now making their own struggle to save their 11-year-old daughter.