Season 1
01. Here Comes an Alien
Kosei Hoshimi, a young warehouse worker, stumbles upon a mysterious amnesiac man secretly devouring his yakisoba. When the man suddenly takes off, Kosei's pursuit lands him right in the middle of a kaiju attack tearing through the city! Witnessing Kosei's compassion for a girl in the shelter, the amnesiac resolves to shield the city from the kaiju, and a crimson light ignites within him!
02. The Alien, Scholar, and I
The amnesiac man declared his name: Omega. Kosei brought him back to the warehouse, and they start living together. Though Omega's past remained a mystery, the two ventured into the forest, hoping to uncover the true nature of the kaiju reported on the news. It was within this forest that their path crossed with Ayumu Ichido, a biologist. Kosei introduced the amnesiac to Ayumu as Sorato. The three began working together to search for the kaiju.
03. Beware of the Cold Wave
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04. Chasing the Claw Marks
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05. Miko and Mikoto
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06. The Kaiju's Search
A kaiju appeared at a construction site deep in the mountains. Soon after, it suddenly died, but the reason is unknown! Ayumu and her junior team member, Yuta, go to investigate in the mountains. Another kaiju of the same species appears there and chases them until they are completely lost... Then, the kaiju begins to advance toward the city with unstoppable determination. Where is it going, and why?
07. Caught a Cold
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08. The Legend of Mt. Kirifuri
Mt. Kirifuri is a place with frequent reports of paranormal phenomena. Ayumu asks Sorato and Kosei to accompany her there to visit a paranormal research club studying the Brigadoon phenomenon, which they claim occurs in the mountain's thick mist. When an accidental occurrence of the phenomenon opens up another dimension, Ayumu ends up lost inside!
09. The Kanenari Kaiju Park
As Sorato and Kosei argue over a banana at breakfast, news breaks about a hibernating kaiju discovery. The two team up with Ayumu and infiltrate Kanenari Corporation, a leading Japanese company sheltering the creature. But the company's president, who advocates for kaiju protection, extends a job offer to Ayumu...!
10. A Close-Up of the Two
Sorato and Kosei have been asked for a closeup exclusive! Reporter Maki is determined to get a proper close-up of the two, but her enthusiasm throws them off. After a kaiju that appeared in a hot spring town slips through their fingers, the two friends get in a big fight!
11. Episode 11
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12. Episode 12
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13. Episode 13
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14. Episode 14
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15. Episode 15
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16. Episode 16
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