ANIME BREAKDOWN:
Hunter x Hunter #06
Steak x Marathon x Exam Begins

Summary:

Deep underground, Leorio, Kurapica & Gon are given admission numbers and meet the rest of the Hunter contestants. Examiner Satotsu introduces himself, and the First Exam begins: to follow him at a breakneck pace through the tunnel. After 30 minutes, Leorio falls behind. Contestant Tompa leads Leorio to a poisonous tree, and ditches him at the base.

Notes:

Killua & Hisoka
First Appearances (Minor): Satotsu, Hanzo, Tompa, Gereta, Barbon, The Amori Brothers, Todo & Nicole

Manga:

• Chapter 005 - 1st Round: The Trial Begins [1]
• Chapter 006 - 1st Round: The Trial Begins [2]

Video (Fansub):