Arifureta - Season 2 Episode 04

"Reunion" (親子の再会) is the 4th episode of Season 2, and the 17th episode overall, of the Arifureta: From Commonplace to World's Strongest Anime adaptation.

Synopsis
Tio escapes the volcano alone and flies towards Ankaji. Meanwhile, Hajime and the others, still in the volcano, hatch a plan to escape the incoming lava without sacrificing any of their goals.

Summary
Having barely escaped from her pursuers, Tio returns to Ankaji and is treated by Kaori and Myu, while Hajime, Yue and Shea reach the core of the labyrinth and seize its power before escaping in a submarine created by Hajime. Some time later, the party regroups in the middle of the ocean and arrives at the sea city of Erisen, home to the merfolk, where Myu reunites with her mother. Meanwhile, Shizuku consults with Aiko and learns that Hajime was officially branded as a heretic by the church for refusing to comply with their orders. Aiko also reveals that both the king and the nobles are behaving strangely and that according to Hajime, they can't trust neither the church nor the God Ehit, as he knows his true objective.

Characters in Order of Appearance
Characters in italics debuted here.
 * Hajime Nagumo
 * Yue
 * Shea Haulia
 * Myu
 * Tio Klarus
 * Kaori Shirasaki
 * Kingdom Soldier
 * Remia 
 * Shizuku Yaegashi
 * Aiko Hatayama

Locations

 * Gruen Desert
 * Grand Gruen Volcano (flashback)
 * Dukedom of Ankaji
 * Palace
 * Heiligh Kingdom
 * Royal Palace
 * Erisen
 * Remia and Myu's House

Monsters

 * Sharks

Differences from Light Novel

 * The Anime omits Tio consuming a vial of Hajime's Ambrosia that was in his "Treasure Trove", as she flies towards Ankaji.
 * The Anime omits Kaori attempting to heal Tio when she first returns to Ankaji, which is unsuccessful due to the severity of her injuries.
 * The Anime omits Hajime, Yue and Shea being consistently knocked around inside the submarine due to the force of the volcano's eruption, until Yue manages to stabilize all of them with her gravity magic.
 * In the Light Novel, Hajime, Yue and Shea fight various aquatic monsters while they are traveling underwater. In the Anime, they only fight a swarm of shark monsters.
 * In the Light Novel, Hajime and Yue meet Shea inside the submarine after the two of them have sex outside. In the Anime, Shea walks in on them while they are lying beside each other on the submarine's hull.
 * In the Light Novel, Hajime reunites with Myu and the others at Erisen. In the Anime, they reunite right after confronting the squad of of dagons.
 * In the Light Novel, when Myu is free-falling towards Hajime, he alters the speed of his ascent to kill the impact of her fall. In the Anime, Yue uses her magic to reduce her speed before Hajime catches her.
 * The Anime omits Yue and Shea hugging Hajime after Kaori and Tio hug him during their reunion.
 * In the Light Novel, the soldier interrogating Hajime at Erisen is shocked after seeing him listed as a gold-rank adventurer on his Status Plate. In the Anime, he acts very calm.
 * The Anime omits the soldier warning Hajime about Remia's physical condition before the latter escorts Myu to her.
 * The Anime omits Hajime and Kaori's brief discussion about her being able to heal Remia as they escort Myu home.