Character Relationship Map: Time Trip App

Characters

• Katsu Kaishu (played by Hiroshi Tamaki) — protagonist

  A historical samurai and statesman in 1868 Edo who seeks to prevent a bloody battle between government and shogunate forces. After meeting time-traveling high school teacher Mikako and her student Mas...

• Masaya Takase (played by Tokio Emoto) — supporting

  A high school student from the future and Mikako's pupil who becomes fascinated with the historical shogunate era. Trapped in 1868 Edo, he accompanies Mikako under Katsu Kaishu's protection, providing...

• Eri Morino (played by Haruna Kawaguchi) — supporting
• Yoshinobu Tokugawa (played by Eisuke Sasai) — supporting
• Shintaro Numata (played by Yudai Chiba) — supporting
• Takamori Saigo (played by Koichi Sato) — minor

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Eri Morino → Shintaro Numata (Professional Teacher And Student) — Eri accompanies Shintaro through the time-travel crisis.

  Eri is described as the teacher of the students who travel into the past, including Shintaro.

• Eri Morino → Masaya Takase (Professional Teacher And Student) — Their teacher-student relationship is strained by Masaya's resentment.

  The plot identifies Eri as Masaya's teacher and says Masaya resents her strictness.

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Masaya Takase → Yoshinobu Tokugawa (Narrative Historical Observer) — Masaya witnesses the political crisis surrounding Yoshinobu.

  Masaya and the other travelers observe the debates over whether Yoshinobu's side should resist the Satcho assault.

• Yoshinobu Tokugawa → Takamori Saigo (Conflict Opposing Leaders) — Their sides are positioned on opposing sides of the impending assault.

  Yoshinobu and his advisers debate resisting the approaching Satcho forces, while Saigo is the figure Katsu seeks to negotiate with.

• Katsu Kaishu → Yoshinobu Tokugawa (Alliance Political Associates) — They are on the shogunate side of the crisis but are shown in different roles in the decision-making around resistance.

  The plot places Katsu's efforts to avert war alongside Yoshinobu and his advisers' debate over whether to resist.

• Katsu Kaishu → Takamori Saigo (Conflict Negotiating Opponents) — Their negotiations are presented as crucial to avoiding a battle for Edo.

  Katsu seeks to avert war with the Satcho forces, and the plot identifies negotiations with Saigo as central to the expected peaceful opening of Edo Ca...

• Masaya Takase → Katsu Kaishu (Alliance Historical Ally) — Masaya becomes involved in the historical effort to prevent war.

  Katsu shelters the travelers according to the character profile, and the plot says Masaya tries to help by carrying a letter to Saigo.

• Eri Morino → Katsu Kaishu (Alliance Allies) — They exchange counsel while facing the danger surrounding Edo.

  Eri speaks with Katsu about her uncertainty advising her students, and she offers him a hopeful glimpse of the future as he works to avert war.

• Masaya Takase → Shintaro Numata (Social Classmates) — They are fellow students who reunite after arriving in Edo on different days.

  The plot identifies both as Eri's students and says Masaya eventually reunites with Shintaro in the past.

Story Analysis

A group of students and their teacher are displaced into Edo's looming political crisis, where their knowledge of history collides with uncertainty about changing the past.

Plot Progression

1. A Lesson Disrupted — Eri teaches her students about Katsu and Saigo while Masaya resents her strictness and Shintaro resists his parents' expectations. A strange display during an exam sends the students into the past.
2. Stranded in Edo — The students arrive in Edo on different days and eventually reunite. They suspect the time-traveling phone caused their displacement and may offer a return after four days.
3. A City on the Brink — Edo faces an assault while Katsu seeks to avert war and Yoshinobu's side debates resistance. The travelers' knowledge of history offers little certainty because their presence may affect events.
4. Counsel and Consequences — Eri admits her uncertainty about guiding her students, and Katsu explains his commitment to Japan over his own standing. A message from Saigo points toward a meeting, while the travelers face an attac...