Vessel 8: Black Thunder Strikes!

Vessel 8: Black Thunder Strikes! is the eighth episode of Utsuwa Sentai Seitenger. This episode marks the first appearance of SeitenThunder, the Thunder Dragon Thunagon, the Elemental Guide Rhiunder, and DraNoRaiJin.

Synopsis
Though Misae tried her best to heal Amuro, he still won’t wake up. Though it wasn’t supposed to be, Hideoki held himself responsible, which only made Shuichi feel really guilty. His only goal now was to find the monster who hurt his friend and even Helen who was seriously injured but managed to stay conscious to teleport Amuro to a safe place before passing out, soon putting her in a coma. The other Vessels only wanted to help Shuichi release his anger and free himself from the guilt he was feeling. But the battle they soon faced with the Triske Monster became a losing one. In the midst of a frustrating situation, a black suited warrior with the ability to manipulate thunder and lightning appears to save the Seitengers. What’s even more surprising is the fact that the voice behind the suit belongs to someone they all know very well.

Story
to be added

Characters

 * Shuichi Hiwara
 * Eichirou Mizuhashi
 * Itsuki Hoshiyama
 * Misae Fuumiya
 * Erika Hoshiyama
 * Hideoki Mizuhashi
 * Nanami Kinmura
 * Helen Tennouji
 * Amuro Raisaki
 * Akira Kinmura
 * Natsume Takeda

Mecha

 * Vessel Combination SeitenOh
 * Fire Lion Firion
 * Water Shark Sereo
 * Earth Tiger Terraiger
 * Wind Falcon Skylon
 * Light Dove Dovight
 * Thundering Vessel Combination DraNoRaiJin
 * Thunder Dragon Thunagon
 * Rhiunder