Gainer lives in a Domepolis in Siberia. One day, he is unexpectedly taken to a detention center by the Siberian Railway Guards on suspicion of emigrant activity. There, Gainer meets a young man named Gain and leaves with him when he escapes. They break into a manor house and Gainer steals an Overman to fight back against the Railway Police who have caught up with them.
Episodios
1. Gain and Gainer
2. Repayment
3. Explosion! Overskill
4. The Taste of Victory is the Taste of a Kiss
5. Eyes Shining Toward Siberia
6. Saint Reagan's Assassin
7. The Railroad King, Kizz Munt
8. A Hellish Relay Race
9. A Hard Struggle! Adett, the Teacher
10. Asham's Tenacity
11. Tears Can't Be Stolen
12. An Attack Over Enormous Stone Columns
13. Brunhilde's Tears
14. The Apparition, Dominator
15. Between the Schedule and Magma
16. A Tough Fight, Adett Squad
17. A World Without Lies
18. The Sword's Fragility
19. Leonetta's Nightmare
20. Defeated at Katezu
21. Overman's Darkness
22. The Agato Crystal
23. Overdevil Revival
24. Overmax
25. Inside the Ice
26. Gain Over
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Posters