Ep. 55: Super Super Super Acceleration!! Black Shinkalion Kurenai
Aired on January 26, 2019

55
Hayato and his friends are forced to sit upright by Shashot while preparing to welcome Seiryu as an ally at the Ultra Evolution Institute. Shashot is sulking because he missed the Tokyo Station sightseeing tour in Episode 53 and the battle in Episode 54. Seiryu offers to handle the situation while Shashot remains upset. Meanwhile, Hayato and the others investigate why Shashot was designed exclusively for the E5 train model. The group navigates these interpersonal conflicts and technical mysteries as they proceed with their mission to integrate Seiryu into their team.
Episodes
- Ep. 51 · Futaba Compiles Official Report on Ultra Evolution Institute Year-End Activities
- Ep. 52 · Shinkalion Drivers Gather for New Year Celebration with Seiryu Joining the Ueda Family
- Ep. 53 · Hayato and Tsuranuki guide Seiryu through Tokyo Station with Ōmiya Branch assistance while Subaru Azuma inspects the unit.
- Ep. 54 · Hayato visits Nagoya to resolve Ryūji and Tatsumi's silent conflict.
- Ep. 55 · Super Super Super Acceleration!! Black Shinkalion Kurenai
- Ep. 56 · Beans!! Seiryu the Demon
- Ep. 57 · Close Concern!! The Kitoralsus' 24 Hours
- Ep. 58 · Hokuto joins the Shinkansen Ultra Evolution Institute to pursue the Ultra Evolution Speed
- Ep. 59 · Hayato chooses battle over dialogue against Doctor Iza while Hokuto feels conflicted