The Best Episodes Written By Keigo Koyanagi

Every TV Episode Written by Keigo Koyanagi Ranked from Best to Worst by Thousands of Voters

Episode Rankings

  1. #1 Fan Favorite
    undefined Season 4 Episode 1 - Siltvelt
    7.8/10(4 votes)

    #1 - Siltvelt

    S4:E1

    Naofumi stops at Siltvelt on his journey to Q'ten Lo. The people there worship him as a king.

    Director:N/A

    Be the first to start the conversation for this episode

  2. undefined Season 1 Episode 5 - First Snow, Dreams, Color of Tears
    7.5/10(2 votes)

    #2 - First Snow, Dreams, Color of Tears

    S1:E5

    Haruki has not come to school for a few days and everyone is starting to get worried. Miou is determined to finish her “painting of love” and talk to Haruki about an unfortunate event that happened in the past. “I’ll wait as long as it takes” she says, as the first snow of the season begins to fall.

    Director:N/A

    Be the first to start the conversation for this episode

  3. undefined Season 1 Episode 1 - The Shield Hero
    7.3/10(19 votes)

    #3 - The Shield Hero

    S1:E1

    College student Iwatani Naofumi is reading a book titled "The Records of the Four Cardinal Weapons" in the library when he is suddenly summoned to another world and told he has to save the world as the Shield Hero, one of the Four Cardinal Heroes. And one morning, he finds all his money and equipment gone.

    Director:N/A

    Be the first to start the conversation for this episode

  4. undefined Season 2 Episode 6 - Racing to Catch Up
    7.2/10(9 votes)

    #4 - Racing to Catch Up

    S2:E6

    Fitoria appears when the Spirit Tortoise revives, and with her help, Naofumi attempts to destroy its heart and cut off its head at the same time. L’Arc arrives as well, but all of them are helpless before Kyo’s overwhelming power.

    Director:N/A

    Be the first to start the conversation for this episode

  5. undefined Season 2 Episode 12 - Reason to Fight
    7.2/10(11 votes)

    #5 - Reason to Fight

    S2:E12

    The Wave appears before its scheduled time. Kizuna's group is teleported to it while Naofumi and his party head for Kyo's lab on Ethnobalt's ship. There, they see the true depths of Kyo's wickedness...

    Director:N/A

    Be the first to start the conversation for this episode

  6. undefined Season 2 Episode 11 - Kizuna
    7.0/10(11 votes)

    #6 - Kizuna

    S2:E11

    Naofumi's party is overjoyed to be reunited with Raphtalia. Kizuna criticizes Glass for invading another world. Glass and L'Arc swear they won't fight Naofumi anymore, and instead find another way to solve their problem. Meanwhile, Kyo's plot proceeds.

    Director:N/A

    Be the first to start the conversation for this episode

  7. undefined Season 1 Episode 4 - Yottsun's Drowning
    7.0/10(1 votes)

    #7 - Yottsun's Drowning

    S1:E4

    The tour is now divided into two camps: those who wish to stay and those who wish to leave. As the former decide their course of action to secure their safety, the latter heads back down the mountain. Will they manage to leave?

    Director:N/A

    Be the first to start the conversation for this episode

  8. undefined Season 1 Episode 8 - Visit Nanaki Before Doubting Masaki
    7.0/10(1 votes)

    #8 - Visit Nanaki Before Doubting Masaki

    S1:E8

    Captured by the group, Masaki reluctantly begins telling her story and what her connection is to the Village. But not everyone trusts her words...

    Director:N/A

    Be the first to start the conversation for this episode

  9. undefined Season 2 Episode 8 - A Parting in the Snow
    6.9/10(9 votes)

    #9 - A Parting in the Snow

    S2:E8

    Naofumi’s party heads for the Dragon Hourglass of Mikakage, in order to get to Sikul, the country that summoned Kizuna. Along the way, he sells rare healing items to make a hefty profit. He hears a rumor about a genius mage…

    Director:N/A

    Be the first to start the conversation for this episode

  10. undefined Season 2 Episode 3 - Shaking Land
    6.8/10(9 votes)

    #10 - Shaking Land

    S2:E3

    The Spirit Tortoise begins its march once more, appearing at the border of the kingdom bearing its name. Naofumi volunteers to lure away its familiars while the army tries to bring it to the mountains. The Spirit Tortoise’s familiar, Ost, fights alongside the humans…

    Director:N/A

    Be the first to start the conversation for this episode

  11. undefined Season 2 Episode 7 - Infinite Labyrinth
    6.8/10(9 votes)

    #11 - Infinite Labyrinth

    S2:E7

    Naofumi wakes up in a strange prison to find him and his party at level 1, and Filo missing. They start to raise their levels in order to escape, but things quickly turn against them when a dangerous monster suddenly appears…

    Director:N/A

    Be the first to start the conversation for this episode

  12. undefined Season 3 Episode 1 - The Dark Coliseum
    6.8/10(9 votes)

    #12 - The Dark Coliseum

    S3:E1

    Seeking to reunite the scattered inhabitants of Lurolona Village who were sold into slavery, the Shield Hero and his party head to Zeltoble to secretly compete in the underground fights at the coliseum.

    Director:N/A

    Be the first to start the conversation for this episode

  13. undefined Season 2 Episode 2 - Footprints of the Spirit Tortoise
    6.7/10(9 votes)

    #13 - Footprints of the Spirit Tortoise

    S2:E2

    The leaders of all the nations’ militaries gather in the Spirit Tortoise Kingdom. Naofumi is there as well, and promises to offer his help as one of the heroes. But just before they decide on a plan, a mysterious woman appears…

    Director:N/A

    Be the first to start the conversation for this episode

  14. undefined Season 2 Episode 5 - Ost Hourai
    6.7/10(9 votes)

    #14 - Ost Hourai

    S2:E5

    Naofumi is met by L’Arc, Glass, and Therese. They’re after the person who broke the Spirit Tortoise’s seal and is controlling it. L’Arc proposes teaming up again…

    Director:N/A

    Be the first to start the conversation for this episode

  15. undefined Season 2 Episode 9 - Humming Fairy
    6.7/10(10 votes)

    #15 - Humming Fairy

    S2:E9

    Naofumis party is teleported to Sikul, where Kizuna introduces the Vassal Weapon Hero, Ethnobalt. He soys he can use a piece of Raphtalia's hair and Naofumis blood as a catalyst that can create a shikigami to find her. He creates the shikigami, and they find.

    Director:N/A

    Be the first to start the conversation for this episode

  16. undefined Season 2 Episode 1 - A New Roar
    6.6/10(10 votes)

    #16 - A New Roar

    S2:E1

    Mysterious monsters appear as Naofumi is preparing for the next Wave. At the same time they show up, the Wave countdown stops. The Queen summons the Four Cardinal Heroes, and tells them that the Spirit Tortoise has revived.

    Director:N/A

    Be the first to start the conversation for this episode

  17. undefined Season 1 Episode 3 - Secret, Solitude, Color of Twilight
    6.5/10(2 votes)

    #17 - Secret, Solitude, Color of Twilight

    S1:E3

    The deadline for the “painting of love” is here and Haruki will need to make a choice. Meanwhile, Miou struggles with her feelings towards Haruki, further complicated by discovering the identity of the man who saved her her life when she was young.

    Director:N/A

    Be the first to start the conversation for this episode

  18. undefined Season 2 Episode 4 - Ruins in the Fog
    6.4/10(9 votes)

    #18 - Ruins in the Fog

    S2:E4

    The Spirit Tortoise’s head was cut off, but Ost, its familiar, is still alive. It could revive at any moment. The allied armies need to get back into fighting shape, and fast. Naofumi makes the risky move of heading onto the Tortoise’s back with only a small group, and tries to find its true weak spot.

    Director:N/A

    Be the first to start the conversation for this episode

  19. undefined Season 2 Episode 13 - Flowers Offered in Recollection
    6.3/10(10 votes)

    #19 - Flowers Offered in Recollection

    S2:E13

    Raphtalia recalls having to buy clothing for her smaller self. Kizuna remembers being alone for so long. Rishia remembers Ost trying to give advice.

    Director:N/A

    Be the first to start the conversation for this episode

  20. undefined Season 2 Episode 10 - Katana Hero
    6.1/10(12 votes)

    #20 - Katana Hero

    S2:E10

    Raphtalia is imprisoned in a Raybul Kingdom prison. She’s wary of L’Arc’s team, who is also imprisoned there, but asks them for help in escaping. Glass is weakened by the draining power of the prison. Raphtalia has a plan to escape, but…

    Director:N/A

    Be the first to start the conversation for this episode

Keigo Koyanagi Ratings Summary

"Siltvelt" is the best rated episode written by Keigo Koyanagi. It scored 7.8/10 based on 4 votes. It was directed by N/A. It aired on 7/9/2025 and is rated 0.3 points higher than their second-best episode, "First Snow, Dreams, Color of Tears".