Usagi Rap Lyrics and Pronunciation Mastery! Chikawa: The Secret of Mermaid Island OST

At the center of the box office craze for the 2026 theatrical release, *The Secret of Chikawa and the Mermaid Island*! Check out everything at a glance, from the ultimate addictive Usagi rap solo version to the rhythmic group version, unique highlights, and Q&A.

What's getting a super hot reaction among people coming out of the movie is the Usagi Rap!

Reviews are pouring in saying they are going crazy because the scene of her snapping off her sunglasses and tapping in ad-libs to the beat just won't leave their heads. So today, I’ve put together a comprehensive summary of everything about the incredibly addictive Usagi Rap!

1. Theatrical Version Usagi Chikawa Rap Scene and Story Background

Did you know that the scene in this movie where Usagi suddenly explodes with rap isn't just a simple skit?

In order to counter the Siren's song, which controls plants and threatens, Usagi starts a surprise rap performance with the goal of disrupting the Mermaid's song.

Thanks to the quirky ad-libs and charming dance moves bursting out over the hip-hop beat, the effect of the Siren's song weakens, and even the mermaids on the scene are captivated by Usagi's rhythm, joining in a chorus!

2. Features of Usagi's Rap and Solo & Group Version Song Information

This song, with lyrics written by the original author Nagano and music composed by Shugo Tokumaru, is characterized by expressing Usagi’s unique onomatopoeia and screams through a hip-hop rhythm instead of meaningful words.

- Solo Version: The original song featuring a solo performance by Usagi (CV. Ari Ozawa), highlighted by her signature "Yaha" and "Purupuru" interjections.
- Those with a Sense of Rhythm ver. (Group Version): An even richer and more delightful track featuring Usagi, Momonga (CV. Yuka Iguchi), and the mermaids participating in vocals to rhythmically exchange their unique sounds!

Usagi's signature rap section feels like this.

"ハヤハ プゥルゥ プゥルゥ ヤハ イイイヤハ プゥルゥ~
(Hayaha Pururu Pururu Yaha Iiyaha Pururu~)
イーヤー (ヤハヤハ) ウーラー ハッ ハッ ハッ Yaッ ウラー
(Ya- Yahayaha U-ra- Ha ha ha ha Yat Ura-)
- From the OST of the movie Chiikawa: The Secret of Mermaid Island

3. Usagi Lab FAQ (Q&A)

Q1. Is there any special meaning or significance in Usagi's rap lyrics?
A1. The lyrics don't have a clear meaning! It's a song that arranges Usagi's signature interjections and onomatopoeia, such as "Yaha," "Ura," and "Purupuru," which she usually makes, to the rhythm, so it's a song meant to be enjoyed for the rhythm and addictiveness itself rather than the meaning.

Q2. Which characters participate in the group version?
A2. Not only Usagi, but also Momonga and the mermaid characters participate. Each character exchanges their own unique cute interjections, so you can experience a different charm from the solo versions!

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