Io Naruko is a cool and clever high school boy in the anime "Cute High Earth Defense Club LOVE!"
He has a love for money and investment, and has already built up a massive fortune by doing FX trading even though he’s just 17.
He is known for his polite way of talking, sharp mind, and calm attitude, but he can get super competitive when it comes to showing off with friends or talking about money.
Io values respect and friendship, especially with his close friend Ryuu Zaou.
He sometimes gets caught up in funny or heated moments, especially when talking about profits or little things like someone borrowing his toothbrush without asking.
Io Naruko has short, matcha green hair and light purple, slightly upturned eyes.
He stands tall at 178 cm.
His overall look is clean and stylish, giving off a responsible vibe.
Io is known for his calm, cool, and collected personality.
He always speaks politely, even with close friends.
He believes that money is the most important thing in life.
Io is very rational, realistic, and sometimes a little bit strict about cleanliness.
He gets frustrated if something isn’t tidy or if people use his things without permission.
Io can become super focused on profits, even during school events.
- Age: 17
- Grade: 2nd year, Class B
- Birthday: December 17
- Zodiac Sign: Sagittarius
- Blood Type: A
- Favorite Hobby: Investing and asset management
- Likes: Money
- Dislikes: Variable interest rates
- Favorite Food: Beef bowl
- Least Favorite Food: Food that is expensive but not tasty
- Attribute: Yellow & Earth (Soil)
He is a licensed real estate agent and is the 2nd top student in his grade.
Io’s financial skills are so sharp that the student council wanted him as their accountant.
He already manages assets worth 3.8 billion yen (about 38 hundred million yen).
His motto in life is "Money is everything!"
Io is very smart and great with numbers.
He is skilled in FX trading and asset management, making him very rich for a high school student.
As a member of the Defense Club, he transforms into Battle Lover Sulfur, the yellow earth-element hero.
His symbol color is yellow and his element is Earth.
He has a special love bracelet and magical stick shaped like Saturn for fighting.
Io’s attack skills include "Sulfur Gaia" (throwing yellow glowing stones) and "Sulfur Love Gaia" (yellow electric shock).
He doesn’t care much for fighting, calling it "a nightmare-like time."
Io is best friends with Ryuu Zaou, who is also in his class.
At first, they did not get along and often argued.
Now, they seriously respect and admire each other.
Sometimes, their compliments can turn into intense, funny, almost fight-like moments.
Io helps Ryuu for free, saying, "If it's for Ryuu, I can’t say no."
He has also attracted the attention of Akoya Gero, who recruited him to the student council and once made Io blush by picking a leaf out of his hair.
- "Money is everything in the world!"
- "If it’s for Ryuu, I guess there’s no choice."
- "It’s like a nightmare."
Io is a bit of a neat freak.
He became upset when someone used his toothbrush during summer camp (the culprit was Ryuu Zaou).
Even during the school festival, he was more worried about how much money the curry booth could make than he was about the ongoing battle.
Io is always thinking about profits—even in the weirdest times.
Battle Lovers and Transformations
Io is one of the main members of the Defense Club at Binan High School.
With the call "Love Making!" he kisses his love bracelet to transform into Battle Lover Sulfur, the yellow earth-prince.
He would rather not fight—he thinks battles are a "nightmare-like time."
His magical stick is shaped like Saturn and uses earth attacks.
Season 1
In Episode 6, Io tries to quit being a Battle Lover because he wants to join the student council.
Ryuu Zaou, feeling betrayed, rushes at the Screw Monster alone but gets caught in its tickle attack.
Seeing Ryuu in trouble, Io feels bad and changes his mind, turning back into Sulfur and saving the day with a single, powerful punch.
He rejoins the Battle Lovers.
Season 2
Io’s transformation item changes to the True Love Bracelet and his suit is redesigned.
In Episode 6, Io and Ryuu have a fight, worrying the other three members.
While Yumoto Hakone, En Yufuin, and Atsushi Kinugawa struggle against the Panda Monster, Sulfur and Ryuu arrive together.
Although they say they haven’t made up, they work together perfectly and defeat the monster, leaving the others shocked.
Special Moves
- Sulfur Gaia: Io shoots out glowing yellow stones from his staff.
- Sulfur Love Gaia: An upgraded attack with yellow lightning.
- True Love Attack and True Love Fountain: Combo moves usually done by Yumoto Hakone, but used by Io and Ryuu together in one episode.
Io does not share a hobby with Ryuu, but their close friendship is based on mutual respect and support.
He is often scouted and recognized thanks to his brains and money skills, and sometimes finds himself embarrassed by unexpected things (like having a leaf picked from his hair).
He is truly one-of-a-kind, with a blend of brains, wealth, and cool, steady charm.
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