In the 13th episode of Heavenly Delusion titled "The Journey Continues And Begins," the characters continue their explorations and face various challenges.

The episode begins with four children—Anzu, Taka, Mimihime, and Shiro—wandering outside the academy, believing it to be part of a test. Meanwhile, Sawatari and Aoshima discuss the possibility that Tokyo had a child and that the other is a clone or a genetically modified child.

Then, the focus shifts to Maru, who grows worried as Kiruko does not return. Maru sets out to find Kiruko, with the animation emphasizing the urgency and movement in the scene through blurring effects. Maru engages in a fight, showcasing his combat skills.

Meanwhile, Kiruko is seen beneath a spiderweb, symbolizing entrapment. Kiruko begins to mentally withdraw, reflecting on the desire to be with her older sister, Kiriko. The scene explores Kiruko's struggle with her female body.

Maru eventually finds Kiruko, and Robin enters the scene. Driven by anger, Maru attempts to attack Robin but is stopped by Kiruko. The episode uses the motif of hands to symbolize Maru's violent tendencies.

The story then takes us back to Tokyo and Sawatari, who discuss the Noah Project. Tokyo appears to possess a protective ability, possibly linked to her being the first mother among the genetically modified children.

Meanwhile, Mimihime and Shiro attempt to return to the academy. The episode hints at the beginnings of a romance between the two.

In a reflective moment, Kiruko and Maru sit by a river. Kiruko speaks about her troubled past, and Maru expresses his love for Kiruko. The scene uses color shifts to symbolize Kiruko's emotions.

Toward the end of the episode, a mysterious monster behind a locked door is introduced, hinting at new secrets to uncover.

The episode concludes with a glimpse of an older Anzu, Taka, Shiro, and Mimihime being brought to shore, revealing that the academy is located on an island. This suggests the possible introduction of the Hiruko on the mainland.

With this episode, the season concludes by wrapping up the characters' arcs and teasing an expanding world full of mysteries.

Note: It is important to mention that this episode contains a scene addressing a sensitive topic related to sexual assault. This topic is handled with care and is crucial for understanding Kiruko's character.