 This article is about a temporary monster in Avataro Sentai Donbrothers.
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- "How old do I look...?"
- ―First words after being turned into a Hitotsuki[src]
Sanae Isono (磯野さなえ Isono Sanae) is the boss of the Shirokuma Express who turns into a train-themed Hitotsuki called Resshaki (列車鬼 Resshaki), possessing a ToQger Avataro Gear, out of her desire to look younger. She later evolves into Resshaking (列車鬼ング Resshakingu).
History
At Shirokuma Express, Sanae along with Taro and his coworkers are enjoying a bento box lunch break. During the lunch break, the other coworkers try to butter up Sanae by saying she looks younger today. She is flattered and asks Taro how old does he think she looks. Taro, bluntly honest to a fault, says she is 68, upsetting her but she sighs and says that is correct.
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Sanae turning into Resshaki
In the bathroom, Sanae laments her age in the mirror and wishes she could be younger. Resshaki's aura emerges outside and moves towards Sanae. Over time, Sanae starts to de-age until her 20s which suits her. However, after Taro once again says she is 68, Sanae is even more upset and demands to be younger, as train tracks emerge from her body and she drains the life of several bystanders, then changes into Resshaki.
Resshaki begins absorbing humans into its body, as Haruka hesitates since she is scared. She wants to flee, but upon seeing more people being absorbed, she resolves to fight and transforms into Oni Sister. She pleads for Sanae to remember she is human in a struggle but Sonoi appears to kill Resshaki as he finds her greed disgusting. Haruka protects her, refusing to let Sonoi kill a victim again with so little regard for life. However Sonoza shows up and joined Soni in the battle. She tries to reach Resshaki before Sanae is killed by Sonoi but is blocked by Anoni and Sonoza. Thankfully, Kiji Brother and Inu Brother arrived to help assist her but didn't turn out well due to their different personalities.
Taro arrives and transforms into Don Momotaro and challenges all three of his enemies to a 3 way duel contest but tries to focus on Resshaki. He then uses an Alter Change to become Don Momotaro Alter, his soul leaving his body to pilot it. The other Rangers don’t understand why their comrade is unconscious. Don Momotaro uses his surroundings to inflict rapid damage and hide from Sonoza and Sonoi behind doors for sneak attacks. Having enough of Don Momotaro’s antics, the two leave and Resshaki tries attacking Don Momotaro’s body with the Rangers trying to keep him safe by carrying him. Don Momotaro regains control of his body and after knocking Resshaki back orders his team to execute their finishing blow, the Momotaro Slash.
They defeat Resshaki, who then grows into Resshaking and Don Momotaro chases after her, summoning Juran Tyranno to form Don ZenkaiOh. Don Momotaro uses his robot to ride on top of the train but it throws him off and jumps through wormholes to evade him. Don ZenkaiOh uses the Don Leg Buster to slow Resshaking down and cuts her tracks, causing the monster to derail and crash. Don Momotaro then quickly uses the Don Zenkai Crash to end the battle and purifies the ToQger Sentai Gear, which transforms into the ToQger Avataro Gear.
Sanae awakens, now back to normal, but confused about what happened as Taro looks to see she is alright from afar and leaves.
At Shirokuma Express, the staff enjoys Sanae’s box lunches and Sanae asks Taro how old she is. Taro again responded that she is 68, but considers her feelings and tells her she is full of energy today. Sanae thanks him for the kind remark and Taro smiles. 
TV STORY-Don 2: Big Peach, Small Peach
Personality
to be added
Forms
Resshaki
- Height: 190 cm
- Weight: 228 kg
Powers and Abilities
Powers
- Hitotsuking Transformation: Upon defeat, Resshaki can evolve and grow into her Hitotsuking form.
- Age Regression: Due to her desire, Resshaki can de-age her human form.
- Ressha Speed: Resshaki can run as fast as a train.
- Train Tracks: Resshaki can summon train tracks.
- Lifeform Absorption: Resshaki can absorb humans from the steam locomotive-style armor on her chest.
- Fire Generation: Resshaki can shoot fire from the steam locomotive-style armor on her chest.
Abilities
to be added
Weaknesses
to be added
Arsenal
- Kikenbo (きけんぼう Kikenbō): The Resshaki wields a kanabo-style sword in combat.
Resshaking
After enlarging, she evolved into her Hitotsuking form called the Resshaking (列車鬼ング Resshakingu).
- Height: 452.0 m
- Weight: 18532.0 tons
Powers and Abilities
Powers
- Laser: Resshaking can shoot laser beams.
- Portals: Resshaking can create portals.
Abilities
to be added
Weaknesses
- Train Tracks: Without train tracks, Resshaking is unable to move.
Arsenal
to be addedBehind the Scenes
Portrayal
- Sanae Isono is portrayed by Sachiko Matsuura (松浦佐知子 Matsuura Sachiko). In her 40s, she is portrayed by Sanae Yuki (結城さなえ Yūki Sanae) and in her 20s, she is portrayed by Momoka Kuroki (黒木百花 Kuroki Momoka) who also voiced her Hitotsuki and Hitotsuking forms. As Resshaki, her suit actor is Naoya Iguchi (井口 尚哉 Iguchi Naoya).
Design
- Resshaki is themed after a steam locomotive with influences of the armor of a Hyper Mode ToQger. Its head design is based on ToQger movie villains Grand Duke Hei, Count Nair, and Dark Doctor Mavro.
- As Resshaking, it is similar in design to both Count Nair's Kuliner and the Giant Nair Hounder.
Etymology
- Ressha is Japanese for "train" and refers to the ToQRessha of Ressha Sentai ToQger.
Notes
- Skin Name:
- Resshaki: Steam Locomotive (蒸気機関車 Jōki Kikan-sha)
- Resshaking: Steam Locomotive (9-length Train) (蒸気機関車（9両編成） Jōki Kikan-sha (Kyū-ryō Hensei))
- Resshaki has the earliest debut for a female monster of the week, appearing in the second episode of the series.
- Resshaking is the first Hitotsuking to evolve from a Hitotsuki not created by a Noto general, as well as the first Hitotsuking to possess a non-humanoid form.
- Isono's desire to be younger references the plot point regarding the ToQgers, in that they were originally young children before the Evil Army Shadow Line engulfed their hometown in darkness.
Appearances
References
Footnotes