Story Structure — 5 Plot Phases
Segment 1: Awkward Beginnings
Tsukasa joins SAI Corporation and is paired with Isla. Their initial teamwork is clumsy, and cohabitation reveals Isla's emotional distance. Early field missions establish their professional baseline while highlighting the emotional weight of their work.
Key Events
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First Day at SAI — Tsukasa begins his terminal service role and is paired with Isla. Characters: Isla, Mizugaki Tsukasa
Location: SAI Corporation
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Awkward Teamwork — The pair struggles with basic tasks, highlighting their initial friction. Characters: Isla, Mizugaki Tsukasa
Location: Field
Segment 2: Case Work & Confession
A sensitive orphan case forces both to confront the reality of Giftia expiration. Tsukasa processes the emotional toll and finally gathers the courage to confess his feelings. The confession occurs but is met with uncertainty.
Key Events
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Shared Apartment — Cohabitation begins to foster team growth, but Isla remains distant. Characters: Isla, Mizugaki Tsukasa
Location: Apartment
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Orphaned Child Case — They handle a sensitive case involving a child losing his Giftia family. Characters: Isla, Mizugaki Tsukasa
Location: Orphan's Home
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Grieving Process — The emotional weight of expiration deeply affects both partners. Characters: Isla, Mizugaki Tsukasa
Location: Orphan's Home
Segment 3: Rejection & Separation
Isla's initial rejection leads to Michiru's advice for a temporary separation. Kazuki officially dissolves their partnership, assigning new teammates. The forced distance allows both to reflect on their unique bond.
Key Events
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Grieving Process — The emotional weight of expiration deeply affects both partners. Characters: Isla, Mizugaki Tsukasa
Location: Orphan's Home
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Tsukasa's Reflection — Tsukasa processes the tragic case and his growing attachment to Isla. Characters: Mizugaki Tsukasa
Location: SAI Office
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The Confession — Tsukasa finally asks Isla out, marking a major emotional shift. Characters: Isla, Mizugaki Tsukasa
Location: Park
Segment 4: Reflection & Reunion
Working separately reveals how much they relied on each other. They acknowledge their feelings, officially become a couple, and navigate early relationship jitters. Coworkers provide advice and date ideas to help them adjust.
Key Events
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The Confession — Tsukasa finally asks Isla out, marking a major emotional shift. Characters: Isla, Mizugaki Tsukasa
Location: Park
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Initial Rejection — Isla declines, admitting she is unsure of her own emotions. Characters: Isla, Mizugaki Tsukasa
Location: SAI Office
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Michiru's Advice — Michiru recommends they spend time apart to gain clarity. Characters: Isla, Michiru Kinushima
Location: Cafe
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Marksman Case — Tsukasa works with Eru's old friend, exploring recycled memory theories. Characters: Mizugaki Tsukasa, Eru Miru
Location: Field
Segment 5: Official Romance & Memories
The couple takes a break from work to intentionally create shared memories. The season emphasizes the bittersweet nature of their time together, balancing professional duties with personal connection as the expiration timeline looms.
Key Events
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Partnership Dissolved — Kazuki officially splits the team, forcing independent assignments. Characters: Kazuki Kuwanomi, Isla, Mizugaki Tsukasa
Location: Office
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New Assignments — Both receive new teammates and begin separate case work. Characters: Isla, Mizugaki Tsukasa
Location: SAI Office
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Bond Reflection — Separated partners realize the depth of their unique connection. Characters: Isla, Mizugaki Tsukasa
Location: SAI Office
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Official Couple — They officially acknowledge their romantic relationship. Characters: Isla, Mizugaki Tsukasa
Location: Apartment
After failing his college entrance exams, 18 year-old Tsukasa Mizugaki is offered a position at the renowned SAI Corporation, known for its production and management of Giftia, androids that possess human emotions. Tsukasa’s position is in the terminal service department where the main job is to recover Giftias that are close to their expiration, a graveyard department in every sense. To make matters worse, Tsukasa is ordered to work with Isla, a female Giftia who is never given any responsibility other than serving tea to co-workers.