Issa believes he can stay at his prime permanently.
Peter Pan a character created by J.M. Barrie and then later depicted in the Disney franchise, was able to stayer youthful forever.

The Character was infact based upon the authors deceased brother:
The notion of a boy who would never grow up was based on J. M. Barrie’s older brother who died in an ice-skating accident the day before he turned 14, and thus always stayed a young boy in his mother’s mind.