Story Structure — 5 Plot Phases
A Glimpse by the Sea
The brothers arrive for a summer at the beach, where Haruji becomes fixated on a woman he briefly sees at the station. A later encounter in the water brings them into direct contact.
Key Events
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Summer Beach Arrival — Two brothers arrive by train for a summer at the beach.
Location: Train station
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First Glimpse of Eri — A young woman briefly catches Haruji's attention before the train departs. Characters: Eri
Location: Train station
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Frank's Clubhouse — The brothers arrive at Frank's clubhouse for their beach stay. Characters: Frank
Location: Frank's clubhouse
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Persistent Thoughts — Haruji repeatedly thinks about the woman he saw at the station. Characters: Eri
Location: Beach area
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Water Skiing Encounter — The brothers recognize Eri swimming and bring her aboard a sailboat. Characters: Eri
Location: Coastal water
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Brief Boat Conversation — Eri briefly converses with the brothers before they take her to shore. Characters: Eri
Location: Sailboat
Courtship in Summer
Haruji meets Eri again in Kamakura and teaches her to water ski. Their attraction intensifies during Frank's party and culminates in a beachside embrace.
Key Events
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Kamakura Reunion — Haruji meets Eri again and arranges another meeting with her. Characters: Eri
Location: Kamakura station
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Water Skiing Lesson — Haruji teaches Eri to water ski during their developing courtship. Characters: Eri
Location: Coastal water
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Clubhouse Party — Frank holds a party, and Eri attends with Haruji. Characters: Eri, Frank
Location: Frank's clubhouse
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Dancing Rivalry — Both brothers dance with Eri before Haruji abruptly drives away. Characters: Eri
Location: Frank's clubhouse
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Beachside Embrace — Haruji parks near the beach and embraces Eri on the shore. Characters: Eri
Location: Beach road
The Dangerous Revelation
Eri's nightlife and seaside confession reveal that she is married and pursues affairs. The revelation redirects the emotional conflict toward jealousy and betrayal.
Key Events
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Nightclub Recognition — Eri is seen dancing with an older American man before leaving him. Characters: Eri
Location: Nightclub
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Seaside Club Invitation — Eri invites Natsuhisa to meet her at a seaside club the next night. Characters: Eri
Location: Nightclub
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Marriage Revelation — Eri reveals that she is married and has affairs because her husband is usually absent. Characters: Eri
Location: Seaside club
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Second Beach Embrace — Haruji drives Eri to the beach, where they embrace again. Characters: Eri
Location: Beach
Jealousy Takes Control
Haruji continues planning a future outing with Eri, while jealousy drives Natsuhisa to Eri's residence. Eri rejects him, but his fixation turns toward desperate pursuit.
Key Events
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Camping Plans — Haruji tells his brother about Eri and plans camping with her and her school friends. Characters: Eri
Location: Beach residence
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Jealous Confrontation — Consumed by jealousy, Natsuhisa visits Eri and sleeps with her before she rejects him. Characters: Eri
Location: Eri's residence
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Letter Interception — Natsuhisa reads Eri's letter to Haruji and learns she will arrive early. Characters: Eri
Location: Frank's clubhouse
Pursuit on Open Water
A letter causes Natsuhisa to take Frank's motorboat, and Haruji follows in another boat. The pursuit ends when Eri swims toward the pursuing vessel and is killed.
Key Events
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Motorboat Pursuit — Natsuhisa takes Frank's motorboat to find Eri, while Haruji follows in another boat. Characters: Eri, Frank
Location: Docks
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Fatal Boat Collision — Eri swims toward the pursuing boat, is run over, and the motorboats collide. Characters: Eri
Location: Open water
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Remorseless Departure — After the fatal confrontation, the surviving boat drives away without remorse. Characters: Eri
Location: Open water
Two brothers compete for the amorous favors of a young woman during a seaside summer of gambling, boating, and drinking.