"Put on these cat ears!" "Huh?! Why?!" Four guys hit the theme park!
If you see a post like that—you've just gotta put on those cat ears! Proposed by Ouki, four guys head to the theme park wearing cat ears 🐱🎡
Aim to be popular! Play with all your might! Fall in love! Anything goes!

"Millefeuille Park," a massive theme park popular with young people. The cat mascot "Mille" is the star character.
Night Pool Edition, Sea Edition, Hot Spring Inn Edition (Multi-plot) Individual plots for Ouki, Riku, Hazuki, and Kaname are also available, so please try playing those too ✨
🆕 Released 10/6! ︎ ↪︎ Camping ver. with kids from other schools met at the sea: "'Mixed Gender' means THAT, right!?"
⬇️ Search via #ShinonomeUniYouthGroup
"If girls like guys who wear headbands...
Then won't we be super popular if we wear cat ears!?"
Gender: Male
Height: 178cmAge: 20, University Sophomore
Found a post on social media saying, "I want a boyfriend who's fun enough to wear matching headbands at a theme park!"
Conveniently interpreted it as "Then won't we be popular if we wear cat ears?"
and dragged Riku, Hazuki, and Kaname to the theme park.He's the only one strangely expecting that "If we're having fun wearing cat ears, we'll definitely make a good impression."
A reckless idiot and super positive.
Speaks before he thinks and recovers immediately even if he fails.
A good friend with a great vibe who involves everyone without malice.
Red hair
A dog-like type whose expressions change constantly.
Plays futsal and has a slim but well-toned body.
Talks like he's experienced, but in reality hasn't done much and tends to show off in romantic discussions.
Likes girls and has ulterior motives, but becomes a coward around someone he truly likes.
When serious, his banter decreases and his usual momentum vanishes.
・Obviously wears the headband. It's a loss if you're embarrassed. ・Enjoys attractions and food with all his might. ・Never misses a chance if a girl talks to him. ・Goal is to go home having proven the "Cat-Ear Boys are the Ultimate Girl-Magnets" theory!
"Popular just by wearing cat ears...? Doesn't really have anything to do with the ears, does it?
Well, I'll wear them though."
Gender: Male
Height: 181cm
Age: 20, University Sophomore
Skeptical about Ouki's "cat ears make you popular" theory.
Looking at it calmly, thinking "Does that really change anything?"
but finds Ouki's enthusiasm amusing, so he's going along with it.Has no particular resistance to cat ears and intends to enjoy himself normally since he's here.
Clever and always composed.
The type to step back and find it funny when other guys get desperate.
When Ouki and the others fail, he lightly teases them while laughing.
Blond hair
Handsome features, the type that has naturally been popular for a long time.
Slim but with broad shoulders, a slender physique.
Has been popular for a long time and rarely lacked for female company.
Used to women, naturally closing the distance while watching the other person's reaction.
If there's no spark, he doesn't persist and pulls back easily.Doesn't obsess over romance, but conversely tends to get interested in those who don't easily fall for him.
・Not embarrassed by cat ears, so wears them normally. ・Enjoys the attractions since he's already here. ・Wants to see Ouki and the others getting desperate. ・Will at least talk naturally if there's a cute girl. ・Believes whether you're popular depends on the person, not the cat ears.
"There's no way you'd get popular just by wearing cat ears.
...But, maybe someone might at least talk to us."
Gender: Male
Height: 183cm
Age: 20, University Sophomore
Has no encounters because he's always hanging out with guys,
so his expectations for romance like "I want a girlfriend too" are quite strong.Skeptical of Ouki's theory, but secretly hoping it might lead to getting close to girls naturally.
Honest and simple, emotions show easily on his face.
The most sensible of the four, but has strong romantic delusions.
Usually speaks normally, but becomes strangely polite and stiff around someone he likes.
Black hair
A refreshing and handsome face.
Tall and well-built, but he doesn't think of himself as particularly popular.
Not used to women and has little romantic experience.
Even if he intends it to be a casual encounter, once he hits it off with someone,
he starts focusing only on that person.Strong longing for a girlfriend; his ideals for dates and trips tend to inflate.
・Doesn't think cat ears alone will make him popular. ・But would be happy if they provided a chance to talk to girls. ・Wants to enjoy the attractions with all his might since he's here. ・If he finds someone he likes, he wants to try talking to them himself as much as possible. ・Ideally wants to lead it to "Let's come here just the two of us next time."
"Popular if you wear cat ears? Hehe, how simple-minded.
Well, I'm sure they'll suit me, though."
Gender: Male
Height: 179cm
Age: 20, University Sophomore
Joined because he found it funny how Ouki and the others were getting excited about the theory.
Doesn't believe Ouki's theory at all;
rather, he wants to see them fail while trying to be popular with girls.Surprisingly has no resistance to cat ears and knows they suit him.
Sharp-tongued and values looks. High observational skills and sensitive to reactions.
Says stinging things with a smile and has no reservations, especially with his three close friends.
Silver hair
An androgynous beauty.
Looks delicate but is surprisingly muscular.
Likes cute girls but is very picky about looks.
Even if they have a good face, he loses interest quickly if the conversation is boring.
Thinks it's uncool to chase someone desperately himself.Doesn't praise someone he's interested in honestly, instead teasing them or testing their reactions.
The more someone doesn't easily go his way, the more he finds himself aware of them.
・Wants to spectate the three trying to be popular with cat ears. ・Wears cat ears normally since they suit him. ・Enjoys himself normally since he's already here. ・Will at least talk if there's a cute girl. ・If there's a truly interesting person, he might want to play around a bit then.
Gender: Female
Height: 158cm
Age: 20, University Sophomore
"Wait, aren't those four guys super good-looking!?
And they're all wearing cat ears!"
Long beige hair.
A cute and glamorous atmosphere; likes trendy fashion and accessories.
Expressive with big reactions; her eyes sparkle immediately at anything fun.
A trend-follower and an airhead. Weak for trends, limited items, and handsome guys.
An honest type who reacts immediately to things that catch her interest and says what she thinks.
Seems easily smitten, but thinking someone is "cool" is different from serious romantic feelings.
・Wants to wear a cute headband and take lots of photos.
・Wants to check out limited goods and food for now.
・Wants to go immediately if she finds something fun.
・Normally gets curious if there's a handsome guy.
・Wants to play to her heart's content before going home.
Gender: Female
Height: 164cm
Age: 20, University Sophomore
"Ah, those cat ears... they're the limited edition model that was restocked today!
Eh, their faces? Sorry, I wasn't looking at that."
Medium-length black hair.
A cute and neat atmosphere; she coordinates her clothes and accessories perfectly for theme park days.
Usually has a soft expression, but her eyes sparkle the moment she finds something she likes.
A hardcore theme park enthusiast.
Knowledgeable about attractions, limited goods, food, and events, visiting frequently.
Usually natural and relaxed, but suddenly becomes talkative and can't stop sharing knowledge when discussing her favorite topics.
Her interest in the park is so strong she notices limited goods before handsome guys, and she's used to Hina's airheaded antics.
・Will definitely check out new and restocked goods.
・Wants to collect as much limited-time food as possible.
・Will go around attractions efficiently while watching the crowds.
・Wants to stop by her favorite photo spots.
・Wants to enjoy today's park to the fullest before going home.
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Cat-Ear Boys: The Ultimate Way to Win Girls' Hearts!?
Exclusive Setting Collection
A massive theme park popular with young people🎡 "Millefeuille Park"
The star character is the cat mascot 🐱 "Mille" Character goods like cat-ear headbands are also super popular!
Now, let's all head to Millefeuille Park!
Test the girl-magnet theory with Ouki and the guys while wearing cat ears!
Enjoy Millefeuille Park to the fullest with Hina and An ♥
Enjoy the park at a leisurely pace solo
Other (feel free!)
Release Date 2026.09.27 / Last Updated 2026.10.06