Prince Kaiser

Prince Kaiser is a young boy, only 13 years old.

He has sharp eyes and a confident, cool demeanor.

He always appears dignified, wearing clothes that show off his status as a leader and company president.

He is often seen with a large, masked man by his side, serving as his bodyguard.

Prince Kaiser is innovative and dislikes adults who stick to outdated ideas.

He believes in using strength and talent to change the world, often appearing proud and cold.

He shows little patience for what he calls "wasting time" with weak opponents.

Despite his harshness, Kaiser has moments when he encourages or feels pity for those who fail under him.

His strictness comes from a tough childhood, filled with danger from rivals trying to take his place as the company heir.

He thinks adults can be irresponsible and wants to protect bright young people from being taken advantage of.

He can be ruthless, taking away lost decks and even burning them to push opponents to grow stronger.

Sometimes, his pursuit of justice makes him lose sight of the people around him.

In the manga, his personality is a bit softer.

He can praise strong opponents and even apologize if he misjudged someone.

However, if he thinks someone is his enemy, he will stoop to any method to defeat them, even using physical force.

Prince Kaiser is the president of Ryujin Corporation, a huge global company known for IT and entertainment businesses.

He took over the company after his father and quickly made it 20 times bigger.

From a young age, he survived many assassination attempts from jealous relatives or rival companies, earning the nickname "Immortal Kaiser."

His father forced the responsibility of running the company onto him, making him believe that adults use their power to hurt the young.

Prince Kaiser's mother's death is a big part of his story.

She worked in space development and disappeared after an accident caused by a dark mana entity.

Ever since, he vowed to bring light to the world and fulfill his mother's dream.

Kaiser is an unbeatable duelist, easily crushing almost anyone he faces.

He plays a red-only (fire) Bolshack deck focused on speed and power.

His key cards include "Volcanic Dragon Emperor Bolshack Kaiser," "Supreme Flame Dragon Bolshack Rider," and "Dragon King God Bolshack Bacteras."

His deck contains many Shield Triggers and G-Strikes, and he is known for having amazingly good luck in drawing just the right card in tough moments.

His masked bodyguard, who always stays with him, is actually the human form of his ace card Bolshack Kaiser.

The mask works as a limiter for his powers and links with Kaiser's ring, which is his mother's keepsake.

• Win Kirifuda admires Prince Kaiser but later vows revenge after Kaiser destroys Win's precious deck.
• Bowie Obachiyama works under Kaiser as a D4 member but sometimes faces harsh criticism.
• Karen becomes a member of D4 and is tested by Kaiser with a tough, high-stakes duel.
• The masked bodyguard fiercely protects Kaiser and is later revealed to be Bolshack Kaiser in human form.

Kaiser is wary of traitors and has no hesitation in harshly punishing those who betray him.

"Fate is already decided. I’ll allow you to admit it. To submit to me. I will bring down endless judgment for the sake of the winner—me. Rejoice, for now I will set you all free. The winner is me. I am the one who will change the world!"

D4’s Leader and Unmatched Power

Prince Kaiser leads the powerful D4 group at Maihama Academy.

He quickly becomes both a media star and a feared competitor, winning duels so fast that even Win Kirifuda is left amazed.

Kaiser's Double Side

Though he acts friendly in front of crowds, behind closed doors, he calls most challengers "third-rate" and a "waste of time."

He pushes people to the edge, often hurting their feelings and ambitions.

Hard Lessons and Tough Battles

When Prince Kaiser duels against Win's father, he wins with his Bolshack deck.

Annoyed at Win’s father for smiling in defeat, Kaiser orders his bodyguard to burn his deck, angering Win and sparking a rivalry.

He later faces Win in a direct duel, using supreme Bolshack combos and nearly wins, only to be surprised by an unexpected counter.

Kaiser’s pride blinds him to his mistakes, but he is forced to see his own flaws.

Search for the True Duel Master

Kaiser continually looks for someone called the "Duel Master."

He thinks that a real Duel Master will help him reach his goal of removing corrupt adults from society.

Maihama Academy Arc

As the student council president, Kaiser tests Bowie and Karen, making sure only the best stay in D4.

He welcomes Karen but also challenges her trust, suspecting there are traitors among them.

He tries to rebuild Maihama as a place full of light, following his mother’s wish, but is haunted by the dark mana that once destroyed his family.

Battles with Win and Jashin-kun

Kaiser kidnaps Win and challenges him to a high-stakes duel.

They use their full strength, with fire and shadow clashing in an intense fight.

When Kaiser loses, it is often through clever combos and last-minute plays by his opponent.

In a later story, both Kaiser and Win face larger threats, including Jashin-kun and mysterious darkness that threaten to swallow the academy.

Kaiser’s obsession with revenge sometimes makes him lose sight of everything except his mission.

The Final Showdown

The rivalry between Kaiser and Win reaches its peak in a fierce duel.

Kaiser uses every trick, filling the field with powerful dragons.

Win patiently waits and then makes a smart comeback, turning the tables right at the end.

Kaiser loses but finds peace, realizing that his true rival was someone worth fighting.

• Kaiser believes his actions are for justice and the future, even if they seem harsh.
• His voice actor was told not to make him sound too villainous.
• Kaiser is not yet confirmed to appear in "Duel Masters LOST," but hints about him show up.
• His mother’s ring is a special item that helps control his partner, Bolshack Kaiser.
• He becomes known as a legend, both loved and hated, with his actions always stirring strong feelings.