Characters: Amakusa 1637

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    The Time Travelers 

Natsuki Hayami

Masaki Miyamoto

Naozumi "Kotaka" Yatsuka

Eri Kasugano

Eiji Horie

  • Big Damn Heroes: In the Unzen valley, when a bunch of Christians were going to be tortured to death with boiling water, he uses a trick to make their captors believe that a red dragon had risen from the water.
  • Heroic BSOD: Almost suffers one when he learns that word of his and Kichou's relationship has leaked and that's why she was imprisoned.
  • Gadgeteer Genius
  • Sempai Kouhai: He's one year younger than Natsuki and the others.
    • He Is All Grown Up: Since he landed in the past five years earlier than Natsuki and Eri, when they find each other again he is taller and older than them. Natsuki invokes the trope word by word!
  • The Smart Guy

Seika "Mariana" Akishima

  • Elegant Classical Musician: More exactly, she was a member of the school chorus and a talented singer. Not to mention she had planned to go study music abroads after graduation.
  • Hair Decorations: Wore a hairclip with her school uniform
  • I Broke a Nail: She says this before she and the other kids start working with Natsuki to help out people after the Kobe Earthquake.
  • Japanese Christian: While all of the kids are Raised Catholic, Seika is the one that takes it more seriously. She's sure that this is a Mission from God pretty much from the start.
  • Lovable Alpha Bitch: Slightly. She comes off as more flighty and spoiled than the others, but has a kind heart and does her best to help.
  • Pimped-Out Dress: Her trademark outfit is a white gown. (Justified Trope: she was about to perform on-board right before being Trapped in the Past, thus she had just changed into the gown when Hell broke loose.) Though she later changes to more simple and practical kimonos.

     The Dutch 


Nicolaes Couckebacker

     The Tokugawas and their associates 

The Tokugawa and their associates

Tokugawa Iemitsu

Jubei Yagyu

Nabeshima Motoshige

Nabeshima Mitsushige

Nabeshima Katsushige

Terazawa Katataka

Sugishima Daigo

Hosokawa Mitsutoshi

Matsudaira Tadanao

Shimazu Mitsuhisa


Kuroda Tadayuki

Kuriyama Taizen

Ogasawara Tadazane

Oba Kuranosuke

     People from the Shimabara area 

Masuda Shirou, aka Amakusa Shiro

Matsukura Katsuie

  • Aristocrats Are Evil
  • If I Can't Have You: When the imprisoned Kichou stands her ground and refuses to tell him what he wants to hear, he leaves her in the water prison.
  • Jerk Ass
  • Unwitting Instigator of Doom: Historically speaking, he was the lord whose evil behavior started the Shimabara Rebellion in itself. And from what we see, his in-story role won't be much different.

Kichō (Kikuhime)

Okamoto Shinbei

Mori Soiken

Yamada Kinji

Kinu (Lucia)

Masuda Jinbei

  • Team Dad: hen again, he is Shirou's father


  • Rescue Romance: Genderflipped: she's the one who saved the amnesiac Miyamoto


  • Defiant Captive: She's heavily pregnant and gets tossed in a water prison for being a Christian. She refuses to give in, and when Kichou hesitates due to her worry for her, Yone tells her not to rat out Natsuki and Co.
  • Expy: She plays the in-story role of the real life pregnant peasant whose imprisonment kicked off the whole Shimabara rebellion. Only that, in the story itself, Yone wasn't alone in there: Kichou was thrown in as well.
  • Japanese Christian