
Io Naruko is a 2nd year at Binan High School. Despite being in high school, he makes good money trading on the FX stock exchange. His life motto is "Life is all about money!". He is good friends with Zaō, who along with being a member of the Battle Lovers, is in his graduating class. They call each other "Ryuu" and "Io". It is suggested that they have romantic feelings for each other or a deep friendship that has some romantic dimensions.

As a Battle Lover, his given element is Earth, and he transforms into "Roaring Prince, Battle Lover Sulphur" (Todoroki Ouji, Battle Lover Sulphur).

(Source: Binan Koukou Chikyuu Bouei-bu Love! Wiki)

Teenage boys are notoriously lazy, and the members of Binan High School's Earth Defense Club are no exception. Their definition of “earth defense” is bumming around all day at the local bathhouse. But when a pink wombat appears out of thin air and begs the boys to help him save the planet, even the idlest high schoolers jump to action. Watch the magical boys transform and save the earth with the power of LOVE! 
 
(Source: FUNimation)

**Height:** 174 cm

[Twitter](https://twitter.com/shirai_universe) | [Youtube](https://www.youtube.com/channel/UCdrKW91dH2sN60Huk8pBMqg)

On September 12, 2022, it was revealed that he is married to the writer and former idol [Mariru Harada](https://anilist.co/staff/150544/Mariru-Harada), with whom he has a child.

The second season of Binan Koukou Chikyuu Bouei-bu LOVE! 
 
Teenage boys are notoriously lazy, and the members of Binan High School's Earth Defense Club are no exception. Their definition of “earth defense” is bumming around all day at the local bathhouse. But when a pink wombat appears out of thin air and begs the boys to help him save the planet, even the idlest high schoolers jump to action. Watch the magical boys transform and save the earth with the power of LOVE! 
 
(Source: FUNimation)

An OVA to continue on from the second season.

A new film announced for the 10th anniversary of Binan Koukou Chikyuu Bouei-bu. 
Note: Relations are provisional and will be updated when more info is announced.

Binan is a city somewhere in Japan. The “Earth Defense Club” at Binan High School was a club that did absolutely nothing. When club members Atsushi Kinugawa and En Yufuin were chilling out while soaking in the hot tub at the bathhouse Kurotamayu, a pink beast (Wombat) suddenly appeared out of thin air. “I want to save this planet... can you please lend me your strength?” The two feel the mood has been ruined by Wombat who talks to them in Japanese about how he wants to save Earth with the power of love. Just then, the son of the bathhouse owner Yumoto Hakone shows up, and as soon as he sees Wombat, he chases it, screaming “Let me fluff you up!” The next day, Kinugawa and Yufuin are caught by Wombat once again at school along with the other club members Io Naruko and Ryu Zaou.. Bracelets were clasped onto the wrist of these four, along with Yumoto Hakone who bumped into them chasing after Wombat, with a command that they must save the earth. “It's about love-making!” they hear as a bright light emanating from the bracelet envelops their entire bodies, and the five transform into “Battle Lovers”, the heirs of the throne of love...

"Yumoto Hakone, En Yufuin, Atsushi Kinugawa, Io Naruko, Ryuu Zaou...
Their ordinary lives, which weren't depicted in the anime, have become a novel! 
Is the Defense Club disbanding already?! The anime's scriptwriter Natsuko Takahashi writes this novel with the themes of 'love' and 'the many forms of love'." (Source: Pony Canyon, translated)