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Kosekimaru

Last updated 2026-09-11

Kosekimaru, also known as Miitoboru before his real name was revealed, is an event-exclusive NPC that appeared in Summertime Odyssey.

It appears that when the player uses Waveriders in Golden Apple Archipelago, they are sailing Kosekimaru.

Profile

Kosekimaru hails from Seirai Island and once sailed as part of Ako Domeki's fleet during his rebellion against the Shogunate. He was never able to communicate with his sailors.

Kosekimaru ended up on the Golden Apple Archipelago during a battle with a Shogunate vessel at Seirai Island when Ako Domeki had seized a Maguu Kenki on board after being struck by lightning from the Thunder Manifestation, and all of his sailors have drifted back to land. A part of Kosekimaru's remains was crafted by the local children into a sword made in the likeness of the Maguu Kenki's, while the rest of the wreck was stationed at the island between Twinning and Pudding Isle where a xylophone was also created from his remains.

Eventually, a group of Fatui would travel to the Golden Apple Archipelago and activate a dream-manipulating machine, resurrecting Kosekimaru in the form of a Waverider and granting him sapience. The Traveler, Paimon, Fischl, Mona, Xinyan, and Kaedehara Kazuha encounter Kosekimaru and are able to talk to him after spending one day on the archipelago. As he originally could not remember his name, Paimon names him "Miitoboru," taking his Inazuman origins into consideration.

Days after, the effects of the Fatui's machine on the island have started to fade. During this time, Miitoboru remembers his past and the name given to him by Asase Hibiki, "Kosekimaru" from the Koseki Village.[1]

Appearance

Kosekimaru's appearance in the Golden Apple Archipelago is of the standard Waverider appearance. His window panels light up with blue when he speaks.

The design of Kosekimaru's (and all Waverider's) bow is based on the Thunder Manifestation.

Quests and Events

Events

Dialogue

Icon Emoji Paimon's Paintings 19 Layla 3
This page is missing dialogue.
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Conditions for each line

Approaching a floating hilichurl camp

Miitoboru: "Aren't those hilichurls? Are they seriously everywhere nowadays?"
Miitoboru: "We ocean wayfarers fear no battle! Lay on! We'll take 'em all on, and beat 'em too!"
Miitoboru: "These hilichurls... How did they get out here at sea, anyway? Did they drift over?"

Getting stuck in a whirlpool

Miitoboru: "Well, this is troublesome... Full speed ahead, I say!"
Miitoboru: "We'll charge right through this puny whirlpool!"
Miitoboru: "Let's get out of here. I'm not doing so good..."

Approaching a Cloudleisure Step

Miitoboru: "That floating thing over there sure looks like a jellyfish. Hope it isn't poisonous..."
Miitoboru: "Hmm. Could we stand on top of that floaty thing over there?"
Miitoboru: "I must confess, watching that jellyfish-like thing float in the air makes me want to try it too..."

Approaching Broken Isle

Miitoboru: "This island fell silent a long time ago. But I've been hearing music from it again recently..."

Approaching the islands north of Broken Isle

Miitoboru: "I just get this feeling that this particular island is affecting this entire ocean region. It could be a very dangerous place. Be careful, (‍Traveler‍)."

After repairing the Cognitive Mimicry

Miitoboru: "Did you do something, (‍Traveler‍)? This island's influence has decreased a lot. I think that the surrounding seas should return to normal soon..."

Approaching the island midway between Twinning Isle and Pudding Isle

Miitoboru: "This is where my hull's rear is... Seriously, it's so far from the front half. What in the world happened to me back then..."

Approaching the island midway between Twinning Isle and Broken Isle

Miitoboru: "That's my hull's front half. How did it get all the way up there? What was it trying to do, reach a new high?"

Approaching the partially submerged ruins south of Minacious Isle

Miitoboru: "The starry sky here truly is beautiful. Back in Inazuma, our vision would often be blocked by either clouds or thunder..."‍[is this the correct trigger condition?]
  • This line is available as soon as Travelers gain the ability to understand Miitoboru.
  • This line will play as soon as the location is approached for the first time, regardless of the time of day.

Approaching Minacious Isle

Miitoboru: "I can't put my finger on it, but this island has a rather... mysterious atmosphere..."

Approaching Pudding Isle

  • Hoverlight Rocks: Left & Hoverlight Rocks: Right
Miitoboru: "Huh! Those are Inazuman mountains... But something's a bit off here."
  • Leisurely Rocks: Left & Leisurely Rocks: Right
Miitoboru: "Where are these mountains from? I've never seen anything like them..."
  • Unyielding Rocks: Left & Unyielding Rocks: Right
Miitoboru: "Never seen these trees before, either... Wait a moment. Were the mountains on this island always like this?"

Trivia

  • Miitoboru is the romanized transliteration of the English word "meatball" into Japanese.
  • One way of saying "meatball" in Japanese ends in maru, which is a common Japanese suffix for names, including ship names. (Paimon's observation in English that Inazuman ships end in -ru is incomplete.)
    • Similarly, the word "meatball" in Chinese ends with the same character seen in the other -maru names.
    • In Teyvat, the suffix can be found in the names of Kosekimaru himself, "Seiraimaru" (the only other known named Inazuman ship), Masagomaru, Konbumaru, and Akuoumaru.

Other Languages

LanguageOfficial NameLiteral Meaning
EnglishMiitoboru
Chinese
(Simplified)
「大肉丸」
"Dàròuwán"
"Big Meatball"
Chinese
(Traditional)
「大肉丸」
"Dàròuwán"
Japanese「御肉丸」
"Onikumaru"
"Great Meatball"[• 1]
Korean「고기마루」
"Gogimaru"
"Meatmaru"[• 2]
SpanishAlbondimaruMeatbamaru[• 3]
FrenchViandomaruMeatomaru[• 4]
RussianФрикаделька
Frikadel'ka
Meatball
ThaiMiitoboru
Vietnamese"Miitoboru"
GermanFleischklops"Meatball"[• 5]
IndonesianMiitoboru
PortugueseAlmondemaruMeatbamaru[• 6]
  1. Japanese: Literally "great round meat," where o is an honorific that can be translated in this context as "great." The usual word for "meatball" is 肉団子 nikudango.
  2. Korean: Compound word consisting of 고기 gogi, "meat" and 마루 maru/ maru.
  3. Spanish: Portmanteau of albóndiga "meatball" and maru.
  4. French: Portmanteau consisting of viande "meat", -o-, and maru.
  5. German: Fleischklops can refer to both spherical meatballs and non-spherical meat blobs.
  6. Portuguese: Portmanteau of almôndega "meatball" and maru.

Change History

References

  1. Event Summertime Odyssey World Quest: The Final Treasure