The general public knows that phantom thieves exist, and in particular, a middle-aged police officer known as the Oni Detective chases Joker to catch him, but the Oni Detective secretly hopes Joker doesn't get hurt. However, he doesn't give up and tries to catch him.

Usually, before taking treasures that someone has or owns, the owner of the treasure receives a notice.

The phantom thieves go to any country to find treasures, and large treasures on a national scale may have multiple phantom thieves involved. The stolen treasures are displayed in each of their hideouts.

Characters
Silver Heart - He was called a legendary phantom thief, but now he is old and lives with Queen. He supports his disciples with his unique playful personality and clumsy way of speaking. His skills haven't rusted.

Queen - She is a woman with long, braided blonde hair. She looks thin, but she is a huge eater, and she calls Silver Heart her grandfather. She carries a diamond sword. She is friends with Joker and lives with Silver Heart.

Spade - Joker's rival and friend, he is a man who always bickers and competes to find treasures first. He is usually well-mannered, but he also has a playful personality, such as yelling and fighting in front of Joker.

Villains
Clover - He wears an iron mask and gauntlets, and he uses the power of treasures to cause chaos in the world, hindering Joker and sending his subordinates. He has a noble personality and is serious about everything.

Shadow Joker - He has a violent and angry personality, and his clothes are similar to Joker's, but the color is different, being black. He carries an umbrella that shoots lasers and acts as Clover's subordinate, but he is being used without knowing the truth.

Description

Phantom Joker is a famous phantom thief who always sends a calling card to a place if there's something to steal, and then goes to steal it. He has the alias 'Miracle Maker' and travels in a flying hot air balloon (his home) called the Sky Joker. He sometimes travels by car or on foot. His calling card usually says something like, 'Tonight, I will be accepting 000 (the name of the treasure),' and he usually goes to collect the treasure at night.

Age - Late teens

Appearance
He has a scar on his left eye and wears a red outfit with a cape, a checkered magician's hat, and a J-shaped badge. He has white, spiky hair.

Personality
He has a strong desire for treasure, but he would never harm someone he meets for the first time. He is also impulsive and always has a playful personality, but he shows a serious side when it comes to life-threatening situations. In everyday life, he is clumsy and enjoys jokes and pranks.

Even in extreme situations, he always calmly uses his head and likes to turn things around for everyone.

Backstory
He lost his parents to Clover in the past and was rescued by Silver Heart, whom he now serves as his master. Because of this, he has a deep sense of family and sometimes gets emotional when he sees a harmonious family.

Equipment
Playing Cards - He carries them as a weapon, throwing them to attack or using them for techniques.
Image Gum - Once chewed, it allows him to transform into the appearance of someone he remembers for 5 minutes, and his voice also becomes the same during the transformation. After 5 minutes, it inflates like a balloon and bursts, revealing his original appearance. He can also transform into objects, limited to appearance.
Balloon Gum - A blue gum that can create balloons to fly in the sky. Mainly used for escape.

Techniques
Straight Flush: Spreads five cards to blind the opponent with a strong light.
Shooting Star: Throws a shining card.
Emblem Fire: Throws a card with fire on it.

Likes
Curry, expensive treasure, family (Silver Heart, Hachi, etc.)

He has a male assistant named Hachi, who is young and clumsy but trusts Joker more than anyone else, and Joker also cherishes him in his heart, even though he plays a lot of pranks on him. Hachi always follows Joker.

The phantom thief never denies the word 'thief,' and has the belief that he will never harm anyone and will always send a calling card.

Silver Heart's disciples (Queen, Spade) all work separately and also have assistants.