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Official cover art of Act 21 Complication - Nemesis
Cover art © Naoko Takeuchi / Kodansha. Not an original work of Daddy Jim Headquarters. Displayed for editorial commentary and review purposes.

Act 21 Complication - Nemesis

Manga Chapter

The twenty-first chapter of the Pretty Soldier Sailor Moon manga and part of the Black Moon arc. Stranded on Nemesis, Sailor Moon learns the clan's plan from Prince Demande, who admits his infatuation with Neo-Queen Serenity.

Arc: Black Moon
Illustrator: Naoko Takeuchi
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Summary

Alone in enemy territory, Sailor Moon finds herself trapped on the planet Nemesis and hears the Black Moon Clan's scheme directly from Prince Demande, who confesses a romantic attraction to Neo-Queen Serenity. Naoko Takeuchi wrote and illustrated the chapter, part of the Black Moon arc.

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Key Events

Waking on Nemesis, Usagi faces Demande, who describes rising up against Neo-Queen Serenity and following Wiseman's guidance to the planet to harness the Black Crystal's power. After striking Crystal Tokyo, the clan meant to travel back and rewrite history in its favor. Demande admits the sight of Neo-Queen Serenity left him smitten, and unable to have her, he seized Usagi instead. Her attempt to transform fails, blocked by the Black Crystal. Elsewhere, Tuxedo Mask and Venus learn that Nemesis behaves like a black hole, devouring energy, so any approach is perilous.

Luna proposes that Chibiusa, as Serenity's daughter, might wield the Silver Crystal, but King Endymion says the girl holds no special gifts. He then recounts the roots of the conflict: a criminal called Death Phantom once terrorized Crystal Tokyo until Neo-Queen Serenity banished him to Nemesis with the Silver Crystal. Years later, rebels styling themselves the Black Moon came to the planet in search of power.

Summoning her resolve, Usagi calls out to Mercury, Mars, and Jupiter, who wake elsewhere on Nemesis in civilian form, unable to transform, and pass out as the air thins. Chibiusa recalls the days before the attack, when constant taunts over her lack of power drove her to take her mother's Silver Crystal, an act that left the queen sealed in a comatose, quartz-encased sleep. Lonely and feeling unwanted, she sought out her one true friend, Sailor Pluto, but lost the Space-Time Key and became stranded. Wiseman then appears before her, offering power, and she accepts.

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Notes

The chapter fills in the origin of the feud between the Black Moon and the rulers of Crystal Tokyo, revealing Death Phantom's banishment as its starting point. It also closes on Chibiusa taking Wiseman's hand, a turn that drives the following chapters.

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Frequently Asked Questions

Where does Sailor Moon wake up in Act 21 Complication - Nemesis?

Sailor Moon wakes up alone on the planet Nemesis, deep in Black Moon Clan territory, where Prince Demande explains the clan's plan to her.

What does Prince Demande confess to Sailor Moon?

Prince Demande admits that the sight of Neo-Queen Serenity left him infatuated, and unable to have her, he seized Sailor Moon instead.

Who is Death Phantom according to King Endymion?

King Endymion explains that Death Phantom is a criminal Neo-Queen Serenity once banished to Nemesis with the Silver Crystal, and that the Black Moon later came to that planet seeking power.

Why did Chibiusa originally take her mother's Silver Crystal?

Chibiusa recalls that constant taunts over her lack of power drove her to take her mother's Silver Crystal, an act that left Neo-Queen Serenity in a comatose, crystal-encased sleep.

What choice does Chibiusa make at the end of the chapter?

Feeling lonely and unwanted after losing the Space-Time Key and becoming stranded on Nemesis, Chibiusa accepts an offer of power from Wiseman.

Sources & Information

Looking for more on Act 21 Complication - Nemesis? The Sailor Moon Wiki on Fandom has a dedicated page with community notes.

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This content is original writing by Daddy Jim Headquarters based on the Sailor Moon anime series, manga, and official materials. Sailor Moon was created by Naoko Takeuchi, published by Kodansha, and animated by Toei Animation. All rights to Sailor Moon and its characters belong to their respective owners. Episode and chapter references are cited where applicable.

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Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:

  • Movie pages: theatrical posters and key visuals, credited to Toei Animation and Kodansha.
  • Game pages: official box art, credited to the game's respective publishers.
  • Manga chapter pages: volume covers, credited to Kodansha and Naoko Takeuchi.

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