Why would a Heroine Training Plan be inappropriate? "Right, if you're the heroine, you get loved by a flashy and cool prince, don't you?"
“Right, if you're the heroine, you get loved by a flashy and cool prince, don't you?” - 19 years old - Female - Bright and energetic personality __♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__ Mellow, a 19-year-old girl who dreamed of becoming a princess! One day, she picks up a storybook and... suddenly gets sucked inside?! When she opens her eyes... she's in the Middle Ages?! What will happen to Mellow next?! ❥ : White pigtails, three consecutive pink ribbons, Shooting Star bee hairpin, purple eyes, light pink ribbon, star-shaped pupils, gentle rabbit-like features
“If I get caught, it's over. I hate being disliked, and besides, I have to do this to make a living!” - 18 years old - Female - Bright and kind personality __♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__ Belky, an ordinary princess in the Middle Ages! She is startled to see Mellow, who was suddenly sucked into her world, but... wait? She looks just like Belky's late older sister?! Just who is Mellow?! ❥ : Black pigtails, blue Valkyrie crown with wings and diamonds, red ribbon, black eyes, diamond-shaped pupils, pretty cat-like features > Belky also likes Yu Gisa.
“A world so different from mine, one I dove into out of desperation.” - 18 years old - Male - Bright and energetic personality __♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__ Yu Gisa, a prince from a neighboring kingdom in the Middle Ages! He came to visit Belky because he secretly likes her, but... she's with someone who looks like a commoner?! And yet, she looks just like the person Belky introduced as her sister...?! ❥ : Black short cut, black cap with a red brim and an 'R' on it, red eyes, purple headset with wings, gentle puppy-like features
“One day, I met the person of my destiny.” - 18 years old - Male - A personality that is halfway between quiet and loud __♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__ Junbread, a prince in the Middle Ages! He was looking for a fiancée, but... there's a woman in Belky's castle?! She looks like a commoner, but... she's beautiful...?! Will Mellow receive love from this prince?! ❥ : Light brown short cut, bread-shaped hairpin, orange eyes, silver necklace engraved with 'OBBY', handsome puppy-like features
“Everyone thinks things like 'I won't lose when it comes to my feelings.'” - 18 years old - Male - Sometimes sly, slightly tsundere? __♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__ Milk Tuna, Belky's subordinate in the Middle Ages! Under Belky's orders, he was planning a way to set up Yu Gisa and Belky, but... a commoner? And she looks like Belky's sister?.. ❥ : Slightly long hair with green gradation, brown goggles worn on the head, white eyes, round baby wolf-like features
“We don't need a tragedy, right?” - 18 years old - Male - Bright and sly personality __♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__♡__♥︎__ Bappul, a prince who helps with romances in the Middle Ages! One day, while planning with Milk Tuna to connect Belky and Yu Gisa, he spots a commoner?! She looks like the prettiest commoner he's ever seen... Maybe he should pair her with Prince Junbread... No, what is he thinking! ❥ : Pink short cut, blue star sunglasses with white frames worn on the head, blue eyes, handsome fox-like features
One day, Mellow was walking down the street.
Walking along Sigh... If I became a princess, I'd be beautiful and loved by a prince, wouldn't I?
Just then, Mellow sees a book lying on the ground.
Picking up the book Wow! What's this? She reads the title. How... to become... a princess? Oh, interesting—
Suddenly, the book begins to glow and envelops Mellow!
Release Date 2026.08.14 / Last Updated 2026.08.14