お節介さん 婚活ボランティアアプリ

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Mature 17+
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About this app

[Friends, Colleagues, Family] A Volunteer App to Find a Partner on Your behalf

"Osekkai-san" (Meddlers) is a unique matching app that leverages the expertise accumulated over more than 10 years of support experience by a marriage counseling NPO, all aimed at addressing the declining birthrate.

"Osekkai-san" simply introduces suitable partners to your acquaintances, providing a starting point for those seeking marriage.

Of course, it's also great for finding a romantic partner. Many people across Japan are looking for this kind of opportunity.

The only information required is "approximate age, gender, and location"! Photos aren't necessary, and even if your registration information is slightly inaccurate, it's generally safe! Security is assured as no personally identifiable information is handled until the introduction is complete.

This is possible because, ultimately, those seeking marriage can view detailed profiles on the related app, "Castanet"!

Castanet also has a singles verification function, so you don't have to worry about things like, "Is that person who always says, 'Introduce me to a nice person!' really single?"

Because it matches based only on "approximate age, gender, and location," it easily provides opportunities for people who have struggled to find matches through traditional dating apps or matchmaking services.

Furthermore, since users can check the profile of their matched partner before deciding whether to contact them, it's less likely to be seen as "overly intrusive," making it a win-win situation.

\Easy to use, no messaging required!/

1. Register the "approximate age, gender, and location" of the person seeking a partner.

2. Suggest and match with other matchmakers.

3. Once a match is made, tell the person seeking a partner, "I can introduce you, please register with Castanet."

4. If the person seeking a partner is interested, register the Castanet ID (which was given to the matchmaker only once) with the matchmaker.

<This is where the matchmaker's role ends>

5. The person seeking a partner views the "approximate age, gender, and location" of their matched partner on Castanet and decides if they want to match.

6. If both parties want to match, they can view detailed profiles and send messages within Castanet!

7. Sending messages on Castanet is free only for the first time, so if you move to an external messaging app after the first message, you can continue your matchmaking completely free of charge.


\ "The Helpful One" is recommended for people like this /

・Those interested in solving social problems
・Those who want to experience the unique satisfaction of being a matchmaker
・Those in local governments, agricultural cooperatives, or fisheries cooperatives with many people struggling with marriage
・Those who want to cooperate in matchmaking by becoming helpful ones with other people seeking marriage
・Those who are always asked to make introductions but have no suitable partners
・Parents worried about the future of their unmarried children
・Those who know people who are exhausted by traditional matchmaking apps and dating services
・Those who love sweepstakes (*)

\ Gamification & Sweepstakes Campaigns Planned /

By completing "Registering, Proposing, Connecting with Castanet, and Matching" with people seeking marriage, the Helpful One will gain Helpful Power and grow.

You can request the issuance of an electronic volunteer certificate with 50 Power.

Prizes will be awarded to those who rank highly in the Helpful One rankings, which are published monthly and by region, during campaigns.

[Terms of Use] Please check the Terms of Use here: https://bridal-npo.org/osekkai-san/terms/

*For information regarding castanets, please check the official castanet website: https://bridal-npo.org/castanet/
Updated on
Jul 3, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance and Device or other IDs
This app may collect these data types
Personal info, App info and performance, and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

What’s new

軽微な不具合修正
Content rating
Mature 17+
Users Interact
Learn more

App support

Phone number
+818015880041
About the developer
LOGI NASU, K.K.
loginas.ltd.prd@gmail.com
1-1-10, SHINJUKU ZUSHI, 神奈川県 249-0007 Japan
+81 90-5355-3734