Romantic comedy about an alien teacher and her student who fall in love
Story Structure — 4 Plot Phases
The Mysterious Encounter
Kei's condition and the arrival of the new teacher Mizuho set the stage for their unusual relationship.
Key Events
Kei's Condition Revealed — Kei suffers from mysterious condition Characters: Kei KusanagiLocation: Home
New Teacher Arrives — Mizuho Kazami becomes new teacher Characters: Mizuho Kazami, Kei KusanagiLocation: School
First Meeting — Kei meets Mizuho at the lake Characters: Mizuho Kazami, Kei KusanagiLocation: Lake
Forbidden Love
Kei and Mizuho develop a secret relationship while hiding her alien identity from others.
Key Events
Secret Relationship — Kei and Mizuho begin secret relationship Characters: Mizuho Kazami, Kei Kusanagi, Koishi Herikawa, Hyosuke Magumo, Kaede MisumiLocation: School
Alien Identity Revealed — Mizuho reveals she's an alien Characters: Mizuho Kazami, Kei KusanagiLocation: Secret Place
Alien Intervention — Marie and Miruru intervene Characters: Mizuho Kazami, Marie, MiruruLocation: Space
Truth and Acceptance
The revelation of Mizuho's alien identity and their decision to marry despite the challenges.
Key Events
Maho Arrives — Mizuho's sister comes to Earth Characters: Maho Kazami, Mizuho KazamiLocation: Earth
Marriage Proposal — Kei proposes to Mizuho Characters: Mizuho Kazami, Kei KusanagiLocation: Lake
Wedding Ceremony — Kei and Mizuho get married Characters: Mizuho Kazami, Kei Kusanagi, Koishi Herikawa, Hyosuke Magumo, Kaede Misumi, Hatsuho KazamiLocation: Town
New Life Together
Kei and Mizuho begin their married life while dealing with the consequences of their relationship.
Key Events
Wedding Ceremony — Kei and Mizuho get married Characters: Mizuho Kazami, Kei Kusanagi, Koishi Herikawa, Hyosuke Magumo, Kaede Misumi, Hatsuho KazamiLocation: Town
New Beginning — Couple continues life together Characters: Mizuho Kazami, Kei KusanagiLocation: Home
Story Breakdown
Introduction — Kei's condition and Mizuho's arrival
Kei's Condition — Mysterious illness
New Teacher — Mizuho Kazami arrives
Developing Relationship — Secret romance between teacher and student
First Meeting — At the lake
Secret Romance — Hidden relationship
Friends' Support — Group helps their relationship
Revelation — Mizuho's alien identity revealed
Alien Truth — Mizuho reveals she's an alien
Alien Intervention — Colleagues from space
Resolution — Marriage and new life together
Maho's Arrival — Sister comes to Earth
Marriage — Kei and Mizuho wed
New Beginning — Life as a married couple
Kusanagi Kei, a high-school student living with his aunt and uncle, has an encounter with a female alien. This alien is revealed to be a new teacher at his school. Later, he is forced to marry this alien to preserve her secrets. From there, various romantically-inclined problems crop up repeatedly.
