Sei's Trident
Your go-to VTuber reaction channel! π±
My name is Sei and you can find me reacting to PokΓ©mon, competitive VGC, documentaries, D&D, and everything in between.
New reaction videos daily! PokΓ©mon reactions, VTuber clips, and Twitch highlights straight from PoseidonMythos.
Main YouTube: @PoseidonMythos
Twitch streams: twitch.tv/poseidonmythos
Sei's Trident
Hi Shipwrecks! Your subathon reward is now here!!
The sale for my plushie is now LIVE! π±
It would mean to world to me if we can fulfill the campaign goal! π₯Ίπ
craftifyx.com/products/poseidon
15 hours ago |[YT] | 82
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Sei's Trident
π± Deep Sea Draw Pokemon TCG Live Community Tournament!π±
IT'S BACK! My community Pokemon TCG Live tournament is happening again!
π : August 23, 2026 @ 2pm PT
1st place gets a champion playmat and Top 8 will be receiving Pokemon TCG Live codes!
In order to sign up, you must join my Discord server and assign yourself the "Tournament Competitors" role.
There you will find the tournament link sign-ups as well as the invite code! :D
DISCORD LINK β‘ discord.gg/mEq5NmyrYh
2 months ago |[YT] | 118
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Sei's Trident
Did you grab your Sei birthday merchandise yet? π
Just a few more days before it's gone! π
PURCHASE HERE β‘οΈ murasakiatelier.com/products/crown-of-the-sea-everβ¦
2 months ago |[YT] | 134
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Sei's Trident
Hi hi Shipwrecks~!
The Poseidon Offkai Expo 2026 guide is now HERE!! π±
Here you find:
π Official M&G Details
π Offkai Exclusive Mythos Merchandise
π Where to find Poseidon fan merch
π How to obtain a Poseidon booster pack
Lets have fun this weekend, yeah? ｑοΎ(οΎΒ΄Ο`οΎ)οΎο½‘
2 months ago (edited) |[YT] | 172
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Sei's Trident
π± β§ γ Poseidon Birthday 2026 Merchandise! γ β§ π
Celebrate Sei's birthday with some new (and returning) merchandise! π
π± Acrylic Standee
π Playmat/Deskmat
π Dakimakura (returning item!)
π¦ Voice Pack
π Signed Postcard (set purchase bonus!)
PURCHASE HERE β‘οΈ murasakiatelier.com/products/crown-of-the-sea-everβ¦
3 months ago |[YT] | 165
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Sei's Trident
Yay! β I will be at OffKai this year!!
My virtual meet and greet will be at the Mythos booth (Booth #605) on Saturday, July 25 @ 3pm PT! π±
Everyone who comes to my meet and greet is getting a Poseidon TCG card as well, so come by~ π
3 months ago |[YT] | 236
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Sei's Trident
IT'S FINALLY HERE!! β¨
My general voice pack is now available FOR FREE!
Ranging from good mornings, good nights, daily affirmations, and more!!
Check it out HERE! β‘οΈ ko-fi.com/s/f2fadc6c00
3 months ago |[YT] | 146
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Sei's Trident
Hi guys!! Pre-orders of my newest merch drop is going to be ending in less than 2 weeks.
If you want your Poseidon dice set or any of the other AMAZING goodies, order soon!!
murasakiatelier.com/collections/oceans-blossom
3 months ago |[YT] | 83
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Sei's Trident
πΈ You can call Poseidon cute, just this once! πΈ
Celebrate Poseidon's spring outfit debut with some NEW merchandise!
πΈ Playmat/Deskmat
π» Sticker
πΉ Keychain
πΌ One Piece Card Game DON!! (2 variants)
π Dice Set (D20, D12, D10, D8, D6, D4, D00)
...and a bundle with everything!
Purchase here! β‘ murasakiatelier.com/collections/oceans-blossom
4 months ago |[YT] | 125
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Sei's Trident
βΈ» βΏ NEW OUTFIT DEBUT! βΏ βΈ»
Spring is in the air! πΈ
πΈ New merch!
πΈ New cover!
πΈ ....and perhaps I'll let you call me cute, just this once. π
π May 23, 2026 @ 5pm PT/8pm ET/1am GMT (May 24)
4 months ago |[YT] | 148
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