A Couple of Cuckoos

Overview
Sixteen-year-old Nagi Umino, a diligent student at Megurogawa Academy, discovers he was switched at birth. On his way to a dinner with his biological parents, he encounters the bold and headstrong Erika Amano, who insists on having him pose as her fake boyfriend, adamantly opposed to marriage. However, the dinner takes an unexpected turn when Nagi learns that his parents plan to resolve the mix-up by marrying him off to the daughter they raised—who is shockingly Erika! As their lives intertwine, the pair navigates the complexities of love, identity, and family.
Episodes
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1

You're going to be my boyfriend.
Umino Nagi has learned that he was switched at birth and is set to meet his biological parents for the first time today. However, on his way to school...
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2

I'm not going to marry you.
Nagi and Erika are officially engaged, but Nagi is struggling to comprehend the extent of Erika's wealth. Meanwhile, Erika has her own worries that li...
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3

You aren't going to beat me!!!!
Sharing a home with Erika allows Nagi to concentrate on studying for his exams, but things take a turn when they encounter unexpected challenges.
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4

Would you please go out with me...?
After achieving the highest score in his grade, surpassing even Hiro, Nagi feels ready to share his feelings with her at last.
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5

Can we do our morning study sessions together...?
Hiro and Nagi start to meet each morning for study sessions, but unforeseen events disrupt their growing bond.
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6

I thought you live by yourself.
Erika decides to participate in Nagi’s and Hiro’s morning study sessions to help Nagi out. Meanwhile, Hiro expresses his desire to spend some time...
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7

Is my fate going to change?
Nagi extends an invitation to Hiro to be part of his group for an upcoming school field trip. However, things quickly spiral into chaos when a few mor...
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8

Are you going to marry him?
Sachi observes the tension between Erika and Nagi and becomes determined to uncover the truth. Meanwhile, both she and Nagi find themselves facing an ...
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9

The Kuroshio currents beckon to me.
Hiro and Nagi decide to spend the day at the amusement park together, enjoying the rides and attractions. Meanwhile, Sachi finds herself feeling quite...
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10

Don't treat me like your kid sister.
Sachi and Nagi head out to shop for a Mother’s Day present, but they struggle to come up with an idea that their mom would truly love.
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11

I can't forget that just happened.
Erika and Nagi find themselves in the midst of a power outage. Nagi heads to the front door to search for an emergency kit, but then something unexpec...
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12

It's not that I like you, yet.
Nagi seeks to make amends after a mishap that left him feeling humiliated in front of Hiro during their outing at the amusement park.
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13

Things aren't quite working out, are they?
Nagi finds himself grappling with his emotions, struggling to concentrate on his upcoming midterms.
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14

Walls exist to be overcome!!
Erika's parents insist that she return home if she doesn't pass her make-up exams. Seeking assistance, she turns to Nagi, but the situation proves to ...
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15

We have to tell her... about our secret!
As Erika and Nagi stroll through the festival, he is taken aback by her surprising lack of awareness about the event.
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16

I want to talk about now.
Concerned about Hiro's well-being, Sachi decides to enlist Erika's help to shadow him and uncover more about his life.
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17

Anything could happen right now!
Erika, Hiro, Sachi, and Nagi decide to gather at Erika's vacation home for a study session, but there’s a small twist in the lineup.
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18

Who is that person?
Nagi is excited about the idea of taking the courage test with Hiro, but Erika ends up going with him instead. Nagi is left feeling unsettled, unable ...
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19

You must have noticed by now.
Erika finally discloses the identity of the person she has been attempting to connect with via social media.
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20

I want to grow up already!
Nagi talks with Erika about his experiences with her father, sharing what he attempted to understand and the insights he gained.
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21

It's a secret between you and me.
After achieving the highest score in his term exams, Nagi once more opens up to Hiro about his feelings.
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22

I'll Be There With You
As Erika, Hiro, Sachi, and Nagi continue their stay at the beach house, they uncover hints regarding the whereabouts of Erika's missing older brother....
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23

What Should We Do Now?
As Nagi, Erika, Sachi, and Hiro prepare to head home, Nagi and Hiro choose to linger a bit longer to gather a shrine stamp at the nearby temple. Unfor...
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24

All That Matters Is That You Two Are Happy
The family heads to the diner to celebrate Yohei's birthday, where they uncover some hidden family secrets. The following day, after a study session, ...
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1

Who Was Umino-kun's First Love?
Hiro starts living with Nagi, Sachi, and Erika, leading to some tension among them. However, they soon reflect on the true essence of happiness and wh...
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2

Onii Confessed to You, Didn't He?
When Hiro is taken hostage, Nagi springs into action without hesitation, determined to rescue her.
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3

That, but Times a Hundred
Nagi experiences a shocking revelation regarding Ai's true intentions.
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4

I See You're All Together
Hiro is busy getting ready for an upcoming festival taking place at her shrine.
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5

It's My Life, Too!
The identity of singer Mochizuki Ai, the talent behind the hit song “Arc Fault,” is now public knowledge.
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6

There's No Way I Can Be Normal!!
Nagi and Erika find themselves stuck in a hotel room, held captive by her mother, who appears to be toying with them for her own amusement.
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7

It's Ours to Build!
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8

No Such Thing as a Meaningless Kiss
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9

The Real Enemy is Sachi-chan!!
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10

I Know, Nagi-kun! Let's Take Pictures for Memory's Sake!
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11

I Found Him Attractive for the First Time
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12

Thank You for Falling in Love with Me