Koisuru One Piece [Season 1 Episode 4]

Koisuru One Piece – Season 1, Episode 4: A Hilarious and Nostalgic Ride for Fans

If you’re a One Piece fan looking for something lighthearted yet packed with references to the original series, Koisuru One Piece (literally One Piece in Love) is a must-watch. Season 1, Episode 4, titled “The Haunting of Brook and the Mosquito Battle”, delivers exactly what fans have come to expect: humor, nostalgia, and a whole lot of love for Eiichiro Oda’s masterpiece.

The Premise and Setup

Koisuru One Piece is a spin-off manga written and illustrated by Daiki Ihara, serialized on Shōnen Jump+ since 2018. The anime adaptation, released in April 2025, follows three high school students—two of whom are dating, and the third is a die-hard One Piece fanatic—as they form a fan club. The series is a parody, packed with inside jokes and references that only true fans will catch.

Episode 4 continues the trend of blending absurd humor with deep-cut One Piece callbacks. The highlight? The return of Brook—or rather, his haunting—and an epic (if ridiculous) battle against a mosquito.

Fan Reactions: What Worked (and What Didn’t)

Scrolling through discussions on MyAnimeList, it’s clear that fans had a blast with this episode. Here’s what stood out:

1. Brook’s Haunting Was Surprisingly Scary
   One fan admitted, “Brook’s part—let me be real—that was damn scary!” The episode plays with horror tropes, turning Brook’s ghostly presence into a legitimately eerie moment before flipping back to comedy.

2. The Mosquito Battle: Pure Chaos
   The mosquito fight was a standout, with fans loving how it parodied One Piece’s over-the-top battles. One commenter joked, “The narrator called the mosquito a Tontatta tribe member… I can’t.” The absurdity is part of the charm.

3. Nami’s Tray Scene: A Fan-Favorite
   A hilarious moment involves Nami reacting to a One Piece scene on a lunch tray. One fan apologized for calling her a “fake fan” in earlier episodes, saying, “She’s a real one for recognizing the post-war scene.”

4. Nostalgia Overload
   The episode is packed with references, from the first One Piece opening to Binks’ Sake. A particularly emotional fan wrote, “No way bro, THEY’RE PARODYING THE FIRST OPENING NOW T_T AND REFERENCING THE FIRST ENDING TOO T_T.”

5. The Narrator’s Roast
   The narrator, voiced by the same actor as the original One Piece series, steals the show. Fans loved how he “got mad” at Nami and even roasted the mosquito.

The Verdict: Why You Should Watch

If you’re looking for a serious One Piece story, this isn’t it. But if you want a love letter to the franchise—filled with jokes, references, and pure chaos—Koisuru One Piece is a gem. Episode 4 is a perfect example of why fans are hooked: it’s funny, nostalgic, and unapologetically weird.

As one fan put it: “Idk why I’m watching this sh seriously, but as a One Piece fan, I have to support this.” And honestly? Same.

Final Rating: 8/10 – A must-watch for One Piece fans who don’t take themselves too seriously.

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