Japanese True Love Tester Bra

A little bit racy this post, but if you were able to handle the Condom Word Play frivolities, you’ll enjoy this one. In celebration of its 10th anniversary, Japanese lingerie maker Ravijour is holding its ‘Mood Up’ campaign and has come up with a curious bra design that guarantees not to open unless the lady experiences ‘true love’. Intrigued? We were.


So how exactly does this revolutionary piece of technology work? It’s all to do with the ドキドキ sensations a woman feels when attracted to somebody or, as popular culture refers to it, ‘being in love’. ‘My heart was pounding’ or ‘I had butterflies in my stomach’ are common English expressions often used to depict this excited, nervous state of happiness.

Here’s the explanation:

このブラは、内蔵したセンサーで女性の心拍数を計測し、Bluetooth経由で専用デバイスに通信して解析。心拍の変化率などから“TRUE LOVE RATE”を算出し、これが一定値を超えると、ロックが自動解除されてホックが外れる仕組み。

このブラは、 ないぞうした センサーで じょせいの しんぱくすうを けいそくし、 Bluetoothけいゆで せんようデバイスに つうしんして ぶんせき。 しんぱくのへんかりつなどから ”TRUE LOVE RATE”を さんしゅつし、 これが いっていちを こえると、 ロックが じどうかいじょされる しくみ。

The bra contains a sensor which measures the woman’s heart rate and sends that information via Bluetooth to a special device to be analysed. The rate of change in the heart rate determines the ‘True Love Rate’ which, when exceeding the determined level, will cause the bra to automatically unlock.

When the sensor reaches the so-called ‘True Love Rate’ of heart-pounding excitement…


It pops open! Hopefully at a convenient time…


But what about other forms of excitement such as fear or nervousness that cause heart pounding similar to that of being ‘in love’? Ravijour have factored that into their calculations. The sudden surprise felt watching a horror film or an increased heart rate due to physical activity such as jogging will not trigger the bra to burst open because it fails to meet the ideal ‘True Love Rate’, as depicted in the graph below. Rest easy, ladies!


But for those who enjoy flirting or have a tendency to fall for guys easily, beware! You may find yourself making a bold move way ahead of yourself.

At the very least then, wearing a tight shirt is a must to avoid being exposed!


Here’s how one woman in the promotional video explains it:


いままで ぬがす しか なかった ブラが、 なんか ひとつ あいを たしかめる ための ものみたいな かんじ。 じょせいは いつでも しんじつの あいを もとめていると おもうので、 このブラは せかいじゅうの じょせいの みかただと おもいます。

Until now, a bra was just there to be unhooked. But now, it’s really like an instrument that can check for love. Women always seek true love, so I think this bra is really there for women all over the world.

Finally, here is the full video. Most of it is in English, but there is some good intermediate-advanced level Japanese conversation with subtitles at the end. Enjoy!

Source: Ravijour
Source: Bra, Shutterstock


9 Responses to Gakuu. Studying with Real Japanese

  1. Sabrina September 29, 2010 at 5:48 pm #

    This is pretty cool! Right now I’m studying on Textfugu which is great! I belive Gakuu can be really helpul too. What I like most is that its for pre-intermediate to advanced level students. So you can’t say its the same thing over and over again… students can actually improve their knowledge here. Thank you very much for creating this site. Have a nice day :)

    • Gakuranman September 30, 2010 at 1:09 am #

      Hi Sabrina! Thank you for your comment :).

      That’s definitely our aim. I love Textfugu for beginners and really getting students a solid grounding in the language, but afterwards (and even while) studying the basics, it can really help to encounter raw Japanese material. You don’t have to understand everything at first, but feeling challenged and picking up little bits here and there that are extra to your learning the basics helps expand your mind. Let me know if you have any more questions! More demonstration material will be up soon! We are currently having a special launch sale price for early adopters, so check out the pricing page if interested :).

      • Sabrina September 30, 2010 at 5:14 pm #

        Thanks for your reply. :) Unfortunately I’m even still miles away from the intermediate level. But I’ll definetly return to Gakuu when I get to this point. Anyway, I’m looking forward to the extra demonstration material. :) Keep up the good work.

        • Gakuranman October 1, 2010 at 12:21 am #

          Sure thing :). Let me know if you have any other questions or suggestions for things you’d like to see on Gakuu!

  2. missingno15 October 1, 2010 at 7:31 pm #

    When I looked at this, I first thought to myself, “aw hell no, gakuranman is doing the same thing as koichi…even the website layout is similar”. But then I realized “it’s aimed at pre-intermediate to advanced level students” which is perfect for my situation right now because I now really want to excel way past beginner. So basically, Gakuu really complements Textfugu. Can’t wait for more lessons to see how this is gonna be like so I can decide if its worth getting.

    • Gakuranman October 1, 2010 at 7:37 pm #

      Hey there! Thanks for dropping by :). No way – Koichi and I are buds. I’ve always loved teaching the more advanced stuff so it worked out perfectly. I’ll be adding more stuff in the coming days, so please stay tuned!

      • Lee Aloy October 23, 2016 at 5:20 am #


        I am sorry to ask this silly question. Are you Japanese?
        am hoping to find a Japanese friends here please shot me an email:

  3. DumbOtaku (percent20) October 3, 2010 at 12:58 am #

    This is really cool. I am glad to see more online content going beyond just teaching hirigana and katakana. That is what I try to do on my blog, but with to little consistency. Glad to see an expert do it, btw already a signed-up paid member now. :)

    • Gakuranman October 3, 2010 at 2:24 pm #

      Glad to have you man! Look forward to hearing any suggestions you have for the site and future lessons :)

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