Active flagship series
My Gym Crush Is Too Strong
Romantic comedy • fitness • bodybuilding drama • college life
Explore the seriesOriginal manga • original worlds • independent creator
Stories built to be collected.
Welcome to the C.K Ronin Manga Collection — a growing library of original action, romance, comedy, horror, martial arts, fantasy, fitness, and supernatural storytelling.
11+visual titles / series
9Gym Crush issues
2026C.K Ronin collection launch
Original worlds.One collection.ckmanga.com
Official theme song
Ink & Steel
The official C.K Ronin theme — English & Japanese metalcore dubstep.
Featured worlds
Start here.
The flagship series and the projects currently closest to the front of the C.K Ronin catalog.
The collection
More worlds by C.K Ronin.
Some projects are ready for restoration or continued production; others are being cataloged before full release details are announced.
FALLEN
Complete romantic-comedy volume, restored for the C.K Ronin Manga Collection.
Explore the series
RIN
The historical action saga begins here. Book One is available now, with additional RIN material continuing through restoration and production.
Explore the series
BLIND: Way of the Shinobi
Shinobi project being recovered and verified for the master catalog.
Explore the series
Super Raiju Sentai: Thunder Rangers
Elemental heroes, transformation drama, and team action.
Explore the series
Legend of the Drunken Boxer
Martial arts legend, ancient technique, and hard-earned mastery.
Explore the series
Card sets
Official character cards.
Choose a series below. Each series has its own card numbering — numbers are specific to their series, not a single master set. Alternate versions are labeled Variant Card. Previews are watermarked — full-resolution, watermark-free versions will be available in the Shop.
My Gym Crush Is Too Strong
My Gym Crush Is Too Strong
Issue #1 — Read 4 Pages Free
Issue #1 cover plus the first four story pages — a watermarked preview. The full issue is available to purchase now.
Start reading
My Gym Crush Is Too Strong
Issue #2 — Read 4 Pages Free
Issue #2 cover plus the first four story pages — a watermarked preview. The full issue is available to purchase now.
Start reading
My Gym Crush Is Too Strong
Issue #3 — Read 4 Pages Free
Issue #3 cover plus the first four story pages — a watermarked preview. The full issue is available to purchase now.
Start readingFALLEN
FALLEN
Read Chapter 1 Free
Read the opening chapter of FALLEN free right now. No signup required. The complete digital volume is available to purchase now.
Start readingCherry Iron Gym / Main Cast — Character Cards
Yumi Sakura
Sweet Strength Heroine — Main Heroine.
Rina Kazamori
Emerald Iron Mentor — Trainer.
Aya
Violet Heart Challenger — Love Rival.
Aoi Asakura
Blue Steel Beauty — Gym Ace.
Roxy Fujimoto
Pink Diamond Queen — Rival Influencer.
Kenji 'Ken' Morita
Beginner today. Stronger tomorrow.
Mori Morita
Kenji's older sister — Wellness Program Coordinator.
Takumi Sato
Kenji's closest friend — the hype man.
Cherry
Owner of Cherry Iron Gym.
Mika Tanaka
The Sunshine Spotter — Cherry's best friend.
Yumi Sakura
Sweet Strength Heroine — Main Heroine (alternate artwork).
Lulu Arai
Glitter Hype Girl — Roxy's Diamond Crew.
Reina Hayashi
Diamond Pose Coach — Roxy's Diamond Crew.
Kira Minamoto
Heavyweight Bestie — Roxy's Diamond Crew.
Roxy Fujimoto
Pink Diamond Queen — Rival Influencer (alternate artwork).
Part of My Gym Crush Is Too Strong
Iron Valkyrie Gym
Valeria Knox
The Blackstone Valkyrie — Iron Valkyrie Gym, Powerhouse Rival.
Sable Cross
Iron Valkyrie Captain — Rival Gym Leader.
Leilani Atoa
"The Island Valkyrie" — Iron Valkyrie Gym, Card 03.
Sable Cross
Iron Valkyrie Gym stage poster.
Marina Vale
Iron Valkyrie Gym stage poster.
Leilani Atoa
Iron Valkyrie Gym stage poster.
Valeria Knox
Iron Valkyrie Gym stage poster.
Marina Vale
"The Undertow" — Vice-Captain of Iron Valkyrie Gym.
Valeria Knox
Iron Valkyrie Gym front/back stage poster.
Posters
Yumi Sakura
"The Heroine" — bikini competition showdown poster.
Yumi Sakura
Seiryo Fitness Championship stage poster.
Yumi Sakura
Championship front/back character poster.
Yumi Sakura
Championship front/back character poster (alternate artwork).
Roxy Fujimoto
Pink Diamond Queen — championship poster.
Roxy Fujimoto
Pink Diamond Queen — championship front/back poster (alternate artwork).
Collector Cards
Kenichi
The Shy Genius — a brilliant but awkward student whose quiet heart gets pulled into chaos, love, and destiny.
Bibi
The Fake Girlfriend — a mischievous transfer student pretending to be Kenichi's girlfriend.
Sarah
The Sharp-Tongued Best Friend — Umi's rude but loyal best friend.
Ms. Unikey
The Favorite Professor — brilliant, strict, and unforgettable.
Roy
The Troublemaker — Kenichi's best friend and partner in chaos.
Zumi
Heaven's Voice of Reason — Bibi's best friend and Heaven's calm guardian.
Bibi
The Fallen Angel — sent to help Kenichi win love, but her own heart begins to fall. (alternate version)
Umi
The Campus Queen — the admired top student who holds a quiet place for Kenichi.
RIN
RIN character cards and artwork are on the way. Rin Kamizaki and every future RIN card, poster, artwork, wallpaper, eComic, and collectible will appear here.
BLIND: Way of the Shinobi
BLIND: Way of the Shinobi character cards and artwork are on the way. Cards, posters, artwork, wallpapers, eComics, and collectibles will appear here as the series releases.
Super Raiju Sentai: Thunder Rangers
Super Raiju Sentai: Thunder Rangers cards and artwork are on the way. Aiko Hanabira and all other Thunder Rangers cards, artwork, posters, wallpapers, and collectibles will appear here.
Legend of the Drunken Boxer
Legend of the Drunken Boxer eComics, character cards, artwork, posters, wallpapers, digital art packs, and collector bundles will appear here as the series releases.
Raising Phoenix
Raising Phoenix cards and artwork are on the way. Mei-Lan Xue and all related Raising Phoenix merchandise will appear here.
Scroll of the Shinobi
Scroll of the Shinobi character cards and artwork are on the way. Cards, posters, artwork, wallpapers, eComics, and collectibles will appear here as the series releases.
Shinobi 4099
Shinobi 4099 cards and artwork are on the way. Akari Yagyu and all Shinobi 4099 cards, artwork, posters, wallpapers, and merchandise will appear here.
Ayane the Grappler
Ayane the Grappler cards and artwork are on the way. Ayane Raiko, Yuki Lee, and all future Ayane the Grappler cards, artwork, posters, wallpapers, and merchandise will appear here.
Zombie + Love
Zombie + Love cards and artwork are on the way. Cards, posters, artwork, wallpapers, eComics, and collectibles will appear here as the series releases.
Character spotlight
Meet the collection.
New character-card artwork from the worlds of C.K Ronin.
My Gym Crush Is Too StrongRoxy Fujimoto
Shinobi 4099Akari Yagyu
RINRin Kamizaki
Ayane the GrapplerAyane Raiko
Ayane the GrapplerYuki Lee
Raising PhoenixMei-Lan Xue
FALLENKenichi
Thunder RangersAiko Hanabira
C.K Ronin Vault
Collect the worlds.
A future home for limited digital collectibles, alternate covers, character art, Genesis releases, numbered editions, and special C.K Ronin drops.
Free app
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Readers list
Join the readers list.
Release news, previews, collector drops, and special announcements — straight to your inbox.
About the creator
C. K Ronin
C. K Ronin is an independent comic and manga creator building original worlds across romance, action, comedy, horror, martial arts, fitness, historical fantasy, and supernatural storytelling.
The C.K Ronin Manga Collection brings these projects together in one home — with digital releases, collectible artwork, special editions, and future physical releases.
Contact
Follow the next release.
Questions, publishing inquiries, collaborations, and future store updates.