ANIME BREAKDOWN:
Hunter x Hunter #01
Boy Going on Journey x Leaving a Sound of the Wind

Summary:

A young, talented boy, Gon leaves Whale Island to search for his missing father - Jin Freaks, a legendary Hunter and a fabulous-sounding mixed drink - leaving behind Mito, one thoroughly depressed aunt.

Notes:

First Appearance (Major): Gon
First Appearance (Minor): Mito, Kaito & Jin (mentioned)

Manga:

Chapter 001 - Day of the Departure

Video (Fansub):