The title of this volume is marked as "End" (終), signaling the final conclusion to Fuyu and Ito's story.
Overview: The Final Boss (Family & Future)
In Volume 3, they agreed to become lovers again. In Volume 4, they have to defend that decision against the final obstacles: Their Parents and Their Past Trauma. They are no longer "playing house." They are fighting for the right to build a real family.
Part 1: The "Heart" (Health Scare)
The volume opens with a reality check on their physical health.
The Incident: Fuyu collapses from overwork and stress. He experiences heart palpitations (irregular heartbeat).
The Impact: This terrifies Ito. She realizes that "forever" is fragile. If Fuyu dies, she loses everything.
The Change: They start taking their health seriously. No more junk food binges or all-nighters. They start cooking healthy meals (vegetables, fish) and sleeping properly. It’s a mundane but crucial step in becoming "partners for life" rather than just "partners in crime."
Part 2: The "Demon" (Ito’s Father)
The central conflict of this volume is Ito’s Father. He is a controlling, traditional man who has always dictated Ito’s life. He disapproves of her current job (which pays less than her architectural one) and her relationship with Fuyu (who he sees as unreliable).
The Summoning: Ito is summoned back to her parents' house in Kawasaki. Fuyu insists on coming with her to formally introduce himself and ask for permission to date/marry her.
The Confrontation:
The father attacks Fuyu verbally, asking about his salary, his future, and why he thinks he can support Ito.
In the past, Fuyu would have retreated. But this time, he stands his ground. He admits he isn't rich or powerful, but he understands Ito’s pain and happiness better than anyone.
Ito’s Rebellion: Ito finally yells at her father. She tells him that she is happy now, not in the hypothetical future he wants for her. She chooses Fuyu over her father’s approval.
Part 3: The "NPC" (Fuyu’s Growth)
There is a chapter titled "NPC" (Non-Player Character).
Context: Fuyu has always felt like a background character in his own life. He just drifted along, letting things happen to him (his job, his mother’s death).
The Realization: Through loving Ito, he realizes he has become the Protagonist. He is making choices—to live together, to fight her father, to protect her.
The Jenga Game: They play Jenga at home. As the tower gets unstable, they talk about how their life is like Jenga—building it piece by piece, knowing it could fall, but building it anyway.
Part 4: The Brother & The Past
Fuyu reconnects with his older brother, Yu (who appeared briefly at the funeral in Vol 2).
The Reconciliation: Yu visits Tokyo with his wife and child. Fuyu introduces Ito to them.
The Meaning: Seeing his brother’s happy family gives Fuyu a concrete image of what he wants. He realizes that "family" doesn't have to be toxic like his parents were. He can build a new family with Ito that is warm and safe.
Part 5: The Proposal (The End of "More Than Lovers")
The climax isn't a dramatic explosion, but a quiet, certain moment. They visit the Lotus Field (Hasu).
The Scene: Surrounded by blooming lotus flowers (which grow out of muddy water, symbolizing their love growing out of their messy past), Fuyu proposes properly.
The Dialogue:
He acknowledges that they are both broken people.
But he promises that they will be broken together.
He asks her to marry him, not just date him.
The Answer: Ito accepts. The title of the series—More Than Lovers, Not Yet A Girlfriend—is finally defeated. She is no longer "not his girlfriend." She is his Fiancée.
Epilogue: The "Flower Shop" (Hanayashiki-san’s View)
The final scene is told from the perspective of Hanayashiki-san, the clerk at the Unicorn Cafe who has watched them from Volume 1.
The Scene: It is a sunny spring day. Fuyu and Ito come into the cafe.
The Change: They look different. The heavy, melancholic atmosphere they carried in Vol 1 is gone. They look light, happy, and settled.
The Action: They pay for their coffee. Fuyu pays, and Ito puts loose change into his wallet—showing they now share their finances completely.
The Departure: They leave the cafe holding hands, walking toward the station to go meet Ito’s nephew (Fuyu’s brother’s kid). They are walking into their future as a family.
Closing Line: Hanayashiki-san watches them go and smiles, thinking, "They finally became just an ordinary, happy couple."
Final Verdict on the Story
The entire series is a deconstruction of "Modern Adult Loneliness."
Vol 1: Escaping loneliness through pleasure (Sex/Dates).
Vol 2: Surviving loneliness through connection (Trauma bonding).
Vol 3: Fighting loneliness through commitment (Living together).
Vol 4: Defeating loneliness by building a Family.
It ends happily. They don't become rich or famous, but they find peace with each other in a world that is often harsh.
Final Images: