Tatsumi Arayashiki

is a realtor who is hired by ZAIA Japan to compete against Smile Sumida but is given a Raidriser and Progrisekey by Naki to transform into the .
==History== 
===Background===
Tatsumi Arayashiki belonged to family with low earnings. He and his family used to live in a small house with almost no necessities or luxuries. Because of such a life, Tatsumi started dreaming of living in a large house, and ended up becoming a real-estate agent. Tatsumi became an employee of Onami Real Estate Co., Ltd., and called himself "a man born to sell a house".
===Workplace Competetion===
While using ZAIA Spec, he has achieved top sales results in the department, and he does not break his irreverent attitude even in front of his boss and customers. Tatsumi had been chosen by Gai Amatsu to become ZAIA Enterprise Japan's representive in the second round of the Workplace Competition, where he must make more real estate sales against Hiden Intelligence's Realitor Humagear, Smile Sumida. Despite his success during the competition, he was still pressured by Gai to beat Smile Sumida's increasing sales. Tatsumi was given a Raidriser alongside the Splashing Whale Progrisekey by Naki while he was on the way back to his office. As the Splashing Whale Raider, he began to destroy Smile Sumida's properties, even going as far to directly harming her.
When a millionaire asks for Smile to find him a new home, she sends the carpenter Humagear, Saikyo Takumi Oyakata, to do repairs. However, Tatsumi turns him into the Mammoth Magia and beats Vulcan in battle as the Splashing Whale Raider. Unfortunately for Tatsumi, the house was completed by and giving Smile the winning chance as Tatsumi didn't believe the house fits what the rich man needed. This angers him to the point of destroying Smile. But Aruto becomes Zero-One Shining Assault Hopper to defeat Tatsumi, this time for real. Tatsumi cries on the pressure that he is put and actually wants to admit Smile's achievement. But since he has been defeated even as a Raider, he finally lets go of his depression completely and asks for forgiveness, giving the winning praise to Smile. Regardless, Tatsumi and ZAIA Enterpise Japn actually won by the profit achievement.
== Personality ==
Tatsumi is a very boastful man and arrogant with his skills on luring people to buy the real-estate from him. Despite his boastful, his result is indeed showing the promise which even Smile unable to surpass without Tatsumi going on cheating. The trauma he has since a kid become a moral support for him to help people to have a huge house and having fun.
Unfortunately, Gai knows his weak point and pressuring him and it makes Tatsumi to lose confidence, even the value of with family, going only to lure people to buy a big house instead. After Aruto was able to convince him, Tatsumi shows his guilt from his cheating path and admitted his loss fairly.
==Forms==
Splashing Whale Raider
;Statistics
*Height: 197.0 cm
*Weight: 127.9 kg
Tatsumi transforms into by using the Splashing Whale Progrisekey in the Raidriser.
;Arsenal
*: The fan-style polearm based on a whale's tail.
;Abilities
*Cyclones: The Splashing Whale Raider can generate blue cyclones by swinging the Ougigant towards his targets. The cyclones are strong enough to damage a building.
*Water Bullets: The Splashing Whale Raider can shoot water bullets from the Ougigant's tip, located between the "Tail Fins".
*Strength: The Splashing Whale Raider possess enough strength to lift the Mammoth Magia off its feet.
*Energy Slash: The Splashing Whale Raider can generate a giant energy construct resembling the Ougigant's tip, which he can slam down to create shockwaves.
;Finishers
*: The Splashing Whale Raider generates a giant blue projection of the Ougigant made of Water, before slamming it down.
Appearances: Zero-One Episode 19-20
==Equipment==
*Raidriser - Transformation device
*Splashing Whale Progrisekey - Transformation trinket
*ZAIA Spec
==Behind the Scenes==
===Portrayal===
Tatsumi Arayashiki is portrayed by .
===Concept Art===
*Splashing Whale Raider was designed by .
Splashing Whale Raider concept art.jpg|Splashing Whale Raider concept art
Ougigant concept art.jpg|Ougigant concept art
==Notes==
*The Splashing Whale Raider is the first whale monster since the Whale Imagin.
**The Splashing Whale Raider and the Whale Imagin wield similar weapons, with both being polearms with a forked tip resembling the tail fin of a whale.
*Tatsumi Arayashiki is the second representative to have won through cheating, though the first to have his win remain despite cheating. This is later followed by the last representative.
==Appearances==
* Kamen Rider Zero-One
**Episode 19: She Is a Home-Selling Humagear
**Episode 20: That Is 1000% the Best House
* Kamen Rider Saber
**Episode 0: Kamen Rider Saber Prologue 
==References==
==Navigation==
Category:Whale Monsters
Category:Raiders
Category:Kamen Rider like
Category:Zero-One Characters
Category:Evil turns good
ru:Тацуми Араяшики
Category:Water Monsters