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Case 1: Start Baku Yorozu is an invincible agent who uses his lucid dreaming ability to brilliantly rescue Nemu, a national celebrity, and complete difficult missions in his dreams.
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Case 2: Explode In a dream, Baku somehow becomes a fugitive criminal. When he encounters the Bomb Nightmare, he transforms into Zeztz, but the Nightmare escapes.
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Case 3: Erode "To stop the nightmare, you must find the Mind's Door in the nightmare world." After receiving an order from Zero, Baku falls asleep and infiltrates Fujimi's nightmare to find the door to his mind.
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Case 4: Rob Baku dreams that he is guarding a VIP, the father of the bride, at a wedding rehearsal. Then a man appears and tries to steal from the bride, Miyuki. Baku's protection saves the day, but is he the dreamer of the Nightmare?
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Case 5: Crash Why is the bride Miyuki the dreamer? Baku, who continues to gather information in the real world, comes in contact with Miyuki standing in front of a large tree in the park. He learns that Miyuki has a memory of the tree that could change her life.
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Case 6: Imprison Baku is assigned a new mission: escape from prison. Baku tries to escape with Nem, Masumi Bijogi and Reiko, who are trapped in a prison nightmare, but their way is blocked by various traps. And what secret is hidden in the relationship between Nem and Bijogi?
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Case7: Punish In a dream imprisoned within a prison, the dream master, Bijogi, took Nem and vanished.
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Case8: Serve Baku infiltrates the traditional restaurant "Royal Shirogane" in a dream to carry out a mission to destroy a biological weapon. Right before the wary Baku's eyes, Chef Shiomi, who had tasted the owner-chef Sannoh's dish, collapsed.
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Case9: Poison What is the nightmare Chef Sannoh desires? Baku finds a clue in the words of Shiomi and others in the real world, discovering Sannoh's third Mind's Door in a dream. Peering inside...!
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Case10: Vanish Baku, tasked with the mission "Get back the national secret", infiltrates the home of art collector Atsumi in a dream. A theft occurs involving a famous painting from Atsumi's collection, and Baku suspects state secrets are hidden within that painting.
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Case11: Rot The masterpiece stolen in the dream was corroded by the Nightmare. The national secret hidden within the painting would remain unrecovered if this continued... Baku was disheartened, but Zero rebukes him with an unusually stern tone.
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Case12: Impact In his dream, Baku becomes an employee at the Space Center. His new mission: protect Earth from an approaching giant meteorite. Time until impact: 48 hours. Upon waking, Baku informs Fujimi and Nagumo of humanity's impending doom and springs into action.
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Case13: Extinguish After battling Nox Knight and acutely feeling his own powerlessness, Baku, having lost his confidence as an agent, is branded unfit by Zero.
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Case14: Thunder Baku's new mission is to eliminate his enemy, Nox. Wandering through a black hole in his dream, Baku begins to retrace the nightmare he first saw as a child.
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Case15: Lighten What kind of organization is CODE? When Baku questions Zero, he learns that Nox was once a CODE agent.
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Case16: Escape Baku's new mission is to rescue Nem, who was abducted by a Nightmare. Zero denounces Baku as a "traitor to the organization" for letting Nox escape.
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Case17: Pursue Though he lost Zero, Baku continues his mission to rescue Nem. Nurse Haru then reveals a surprising truth about Nem's disappearance to Baku.
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Case18: Shoot In his dream, Baku, now a high school student, must protect his classmates—Nasuka and Kureha—from the Nightmare orchestrating a death game.
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Case19: Decide Baku meets the present Kureha, now a journalist, and learns the secrets of the organization CODE. Disturbed, Baku questions his role as an agent in the fight.
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Case20: Presage In his dream, Baku, now Village Person A, embarks on an RPG-like adventure with Sota, Tomoko, and the heroine Nem to defeat monsters. When Baku encounters a Nightmare, he transforms into Zeztz, but feels uneasy about the Nightmare's strange behavior...
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Case21: Burst Are countless children dreaming the same dream? Baku, who began investigating, discovers a common thread among the children who shared the same dream.
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Case22: Revenge The new mission is to defeat the Disaster Nightmare that has appeared in the real world and take Odaka's life. Feeling distrust toward the ruthless CODE, Baku questions his role as an agent.
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Case23: Destroy Baku, having undone Zeztz Catastrom's transformation after successfully defeating Nox, falls into a deep sleep and enters the realm of the subconscious. There, he learns of the intense feelings Nem carried, and Baku himself resolves to take decisive action.
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Case24: Break The cold-blooded agent, Code Number: Seven, Baku, shakes off the attempts by Minami and the others to stop him and sets out to carry out his mission: "Find Nem."
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Case25: Get Started Baku awakes in a hospital bed and realizes all his experiences had been a dream. But if it was a dream, why are the Zeztz Driver and Capsems here...?
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Case26: Gather In his dream, Baku recounts his terrifying experiences to Fujimi, Nasuka, and Minami.
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Case27: Play Under a fierce assault from a mysterious Rider who appeared out of nowhere, Baku is jolted awake from his dream. Who is this person capable of changing the future? Baku sets himself the mission to "uncover the enemy’s true identity."
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Case28: Rage Tormented by Sieg, Baku approaches Nox in an attempt to uncover Sieg’s true identity.
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Case29: Trick Baku meets Minami, who has become an agent, in a dream. Baku helps Minami with her mission to find a lost cat, but they are attacked by a Nightmare, and he wakes up.
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Case30: Order Minami is a CODE agent... Upon learning the truth, Baku is disappointed and furious, realizing that Minami had merely been "pretending to be family."