Japanese “acceptable” Button Emoji

A circled orange (sometimes purple) Japanese kanji 可 (ka), meaning 'acceptable,' 'permitted,' or 'OK'. Emojipedia describes it as the Japanese 'Acceptable' Button. Unlike the squared family members, 🉑 uses a circle because it was inherited from the older CJK Compatibility Ideograph set (㊗️ ㊙️) and follows their round styling.

可 is a Japanese verb-auxiliary meaning 'permissible'. In signage it abbreviates 可 in compounds like ペット可 (petto ka, pets allowed), 持ち込み可 (mochikomi ka, bring-your-own permitted), 二人入居可 (futari nyūkyo ka, double occupancy allowed), and 使用可 (shiyō ka, may be used). Its partner kanji is 不可 (fuka, 'not permitted'). Japanese rental listings, museum rules, and café policies are built almost entirely from the 可 / 不可 binary.

In Chinese, 可 (kě) carries the same 'can / may' meaning and shows up in 可以 (kěyǐ, 'can'), 可能 (kěnéng, 'possible'), and 可爱 (kě'ài, 'cute', literally 'can-love'). The character has a philosophical pedigree going back to Mohist logic and the School of Names, where 可 and 不可 functioned as logical operators for 'permissible' and 'impermissible'. Gongsun Long (c. 320-250 BCE), famous for the White Horse Dialogue, used 可 in some of the first documented Chinese attempts at formal logic.

Shipped in Unicode 6.0 (2010) as U+1F251 'Circled Ideograph Accept'. Historical emojitracker snapshots put 🉑 at rank 827 with around 324,499 all-time Twitter uses, making it one of the least-tweeted pictographs in the entire standard. The passport-control 🛂 and 🈷️ are the only Japanese-button emojis that trail it. If you use 🉑, you're joining a tiny global club.

In Japan 🉑 shows up on apartment listings (ペット可, pets allowed), café menus (持ち込み可, outside food okay), co-working space rules (撮影可, photo-taking permitted), and festival bulletins. A typical SUUMO or Real Estate Japan listing reads like a checklist of 可 / 不可 decisions: 楽器不可 (instruments not allowed), ペット可 (pets welcome), 喫煙不可 (no smoking). Pet-friendly stock is scarce: SUUMO data shows ペット可 listings grew from roughly 10% of the site's rental inventory in January 2019 to 18% in January 2024, still well short of the demand from the 16 million pets Japan now keeps (more dogs and cats combined than children under 15).

Outside Japan 🉑 gets almost zero organic use. Google Trends data shows it functionally flat across 2023-2026, losing even to its circled sibling 🉐 (bargain). The emoji is a regular feature of 'rarest emoji' Reddit threads and the @leastUsedEmoji bot's hourly roundups. Its job is narrow (Japanese 'permitted' stamps) and it doesn't have a second meme life to prop it up. The irony is that Japanese readers parse 🉑 instantly while English-dominant users don't know it exists until a listicle surfaces it.

The circled 可 is structurally similar to the two older circled emojis ㊗️ and ㊙️, which date back to Unicode 1.1 (1993) CJK Compatibility Ideographs. When Unicode 6.0 absorbed the rest of the Japanese button family in 2010, it put 🉑 and 🉐 together in a new block (Enclosed Ideographic Supplement) but kept the circular styling to match the earlier circled set.

Japanese carriers originally used 可 as a permissible-action stamp, paired with 不可 (fuka, not permitted). The emoji kept only the positive form. That permit / prohibit binary predates emoji by over two thousand years. The Kangxi Dictionary (1716) cites readings in Cantonese, Mandarin, Japanese on-yomi (ka), and Japanese kun-yomi (beki, no-kore). In classical Chinese philosophy, 可 and 不可 functioned as logical operators for 'possible' and 'not possible'; Mohist texts and Gongsun Long's School of Names used them in the first documented Chinese attempts at formal logic. Every Japanese rental sign today is, unknowingly, running a 2,300-year-old philosophical operator.

1. 1993Parent characters 可 and 得 already encoded as CJK unified ideographs. The circled counterparts are not yet in Unicode.
2. 1999Japanese carrier [au by KDDI](https://emojipedia.org/au-by-kddi) and rival NTT DoCoMo include circled 可 in their early i-mode emoji sets, alongside ㊗️ and ㊙️, so flip-phone messages can carry the signage-style permission stamp.
3. 2010Encoded in Unicode 6.0 (October 2010) as U+1F251 'Circled Ideograph Accept' in the new [Enclosed Ideographic Supplement](https://unicode.org/charts/PDF/U1F200.pdf) block. Grouped with U+1F250 (🉐) to match the older circled styling.
4. 2015Formally added to Emoji 1.0. Apple's first rendering ships with a pale orange background; Google Noto uses a brighter gradient. WhatsApp ships purple.
5. 2018Twemoji 11.0 refreshes the emoji as part of a broader Japanese-button cleanup. The circle receives cleaner edges and higher contrast for small-screen legibility.
6. 2019SUUMO's ペット可 (pet-friendly) listing share sits at roughly 10% of its inventory, low enough that Japanese tenants start citing 🉑 explicitly in apartment-hunting posts on Twitter.
7. 2024SUUMO's ペット可 share grows to 18%, and [Japan's pet population (6.8M dogs + 9.2M cats)](https://www.navigatorjapan.com/blog-2-1/the-expat-pet-guide-2025-living-in-japan-with-a-dog-or-cat-and-keeping-your-sanity) surpasses the under-15 child population, giving 🉑 a quiet new demographic relevance.
8. 2026Still ranks inside the bottom 20 Unicode emoji by tweet share. Appearance on 'loneliest emoji' listicles has become an annual ritual.

Japan: narrow but legible. 🉑 is permissions-context only. Chinese readers understand 可 clearly because 可以 (kěyǐ, 'can / may') is the most common 'yes you can' phrase in Mandarin, but they rarely use the single character alone outside of stamps or signs. Korean readers recognize 可 as hanja but modern Korean signage uses 가능 (ganeung, 'possible') written in Hangul instead. English speakers overwhelmingly don't encounter 🉑 and the emoji appears in 'least-used emoji' lists on tech blogs alongside other obscure symbols. Vietnamese readers, whose language once used Chinese characters via chữ Hán, may recognise 可 (khả) from compounds like khả năng (capability) and khả dĩ (tolerable), though the signage use is Japan-specific.

• •🉑 ranks 827th on historical emojitracker snapshots with roughly 324,499 all-time tweet mentions, making it one of the least-used emoji in the standard. Only passport control 🛂 (~267k) and the Japanese monthly button 🈷️ (~266k) sit beneath it among Japanese-character emoji.
• •In Chinese, 可 combines with 爱 (love) to form 可爱 (kě'ài, cute), literally 'can-love'. Japanese kanji spelling 可愛い (kawaii) is technically ateji: the kanji were chosen to fit an older native word 顔映し (kao hayushi, 'face aglow'). So the 'can-love' reading of 可愛い is a nice coincidence of borrowed characters, not a true etymology.
• •Japanese real estate listings use 可 and 不可 compulsively. A full SUUMO listing reads like a checklist: ペット可 (pets ok), 楽器不可 (no instruments), 二人入居可 (two people ok), 喫煙不可 (no smoking). Foreign tenants learn these four kanji before anything else in Japanese.
• •Pet-friendly share on SUUMO went from 10% in January 2019 to 18% in January 2024, but demand still outruns supply. Roughly 30% of Japanese respondents who don't keep pets cite 'housing prohibits it' as the blocker, making 🉑 on a listing an actually useful filter, not just a decorative badge.
• •In Chinese classical logic, 可 and 不可 correspond to Aristotelian 'possible' and 'not possible'. Gongsun Long (c. 320-250 BCE) used them as formal operators in the White Horse Dialogue, one of the oldest known Chinese attempts at formal logic. Every ペット可 sign in Tokyo is, unknowingly, a 2,300-year-old operator.
• •可 as a grade on a Japanese university transcript means 'pass with average marks' (60-69.99 at Keio and Waseda). The five-tier scale runs 秀 (excellent+), 優 (excellent), 良 (good), 可 (pass), 不可 (fail). Japan's national-university policy caps A+ grades at the top 5-10% of a cohort, so plenty of students graduate with 可-heavy transcripts.
• •The entry for 可 in the Kangxi Dictionary (1716) catalogues readings across Cantonese, Mandarin, Japanese on-yomi (ka), and Japanese kun-yomi (beki, no-kore). The character has been stable in form and meaning for over 3,000 years.
• •Japan's April 2020 indoor smoking ban pushed 喫煙可 from assumed to advertised. Izakaya and bars that still allow tobacco began using the 喫煙可 label prominently because customers now had to choose, and 🉑 crept into Google Maps reviews and Tabelog posts as the emoji proxy.
• •Vietnamese once wrote 可 as 'khả' in chữ Hán, surviving in modern compounds like khả năng (capability) and khả dĩ (tolerable). 🉑 is one of the rare emoji whose core character is legible across the entire historical East Asian Sinosphere.
• •On Japanese broadcast TV, 可 shows up in program-guide grids to mark content that is suitable ('may-watch') for the time slot. The modern Japanese media ratings system descends from the ARIB character set that also fed Unicode 6.0.
• •The emoji occasionally displays in purple rather than orange: WhatsApp and some older Samsung TouchWiz builds shipped a purple circle. Apple, Google, and Twitter use orange. It's one of the few emoji with no visual consensus on its background colour.

• •@leastUsedEmoji bot (2014-present): hourly Twitter tracker that surfaces the current least-used emoji. 🉑 is one of its most-named characters and the bot is largely responsible for the emoji's 'loneliest emoji' reputation in English tech media.
• •Hyperallergic's 'Most and Least Popular Emoji on Twitter' visualization (2013): the first widely-shared English-language chart showing 🉑 near the bottom of the ranking. Set the template for dozens of follow-up articles through the 2010s.
• •Japanese apartment-hunt TikTok (2023-present): creators like @realestatejapanofficial and bilingual Tokyo YouTubers decoding SUUMO listings use 🉑 as onscreen shorthand when explaining ペット可 / 楽器可 / 喫煙不可 filters.
• •Japanese university student LINE stickers (2010s-present): stationery vendors sell 可 / 不可 red-stamp stickers aimed at students reacting to grade releases. 🉑 is the mobile equivalent, used ironically when screenshotting a passing-but-boring transcript.
• •Tabelog and Google Maps review culture (post-2020 smoking ban): 🉑 tucks into restaurant reviews noting 喫煙可 (smoking allowed) or 子連れ可 (kids welcome) in a single character, making it a quiet SEO feature on Japanese review platforms.
• •'Rarest emoji' listicle genre (BuzzFeed, The Next Web, Golf Digest): 🉑 features in almost every English-language 'weirdest / loneliest emoji' roundup from 2013 onward. Its narrow signage use and dense cultural context make it an irresistible mascot for 'emoji you've never used'.