Mahiro Tadai, known in Japanese as 唯井まひろ, is a Japanese adult-video actress, nude model, and online personality. She is affiliated with Mine’S and is widely known as an exclusive performer for SODstar.
This profile summarizes publicly available information about Mahiro Tadai, including her basic profile, career background, media activity, SNS accounts, fan events, and fan reputation. Private matters that could not be verified through reliable public sources are clearly marked as unconfirmed.
Basic Profile
Mahiro Tadai is a Japanese adult-entertainment performer from Tokyo. Her official agency profile lists her as Mahiro Tadai / 唯井まひろ.
| Item | Publicly listed information |
|---|---|
| Stage name | Mahiro Tadai / 唯井まひろ |
| Former name | “Mahiro” was used around her early nude gravure debut |
| Date of birth | March 4, 2000 |
| Age | 26, as of July 9, 2026 |
| Birthplace | Tokyo, Japan |
| Nationality | Japanese, based on public profiles describing her as a Japanese performer |
| Height | 156 cm |
| Measurements | Current Mine’S profile: B90 / W58 / H97 |
| Cup size | F cup on her current agency profile |
| Blood type | AB |
| Agency | Mine’S |
| Main label | SODstar |
| Hobbies / interests | Shopping for cosmetics; cats and games are also mentioned on her official link/profile pages |
Some older public profiles listed different measurements, such as B86 / W58 / H86 and E cup. For this reason, the current agency profile should be treated as the most up-to-date official information.
Career Background and Debut
Mahiro Tadai first appeared publicly as a nude gravure model in Weekly Playboy in 2018, using the name “Mahiro.” Public career summaries state that she was scouted by the Weekly Playboy editorial department for that gravure appearance.
Her AV debut was announced in May 2018, and she began using the stage name Mahiro Tadai / 唯井まひろ. Her debut work was released by SODstar in June 2018.
The name “Mahiro” is said to have come from names of idols she liked, while the surname “Tadai” was reportedly created by SOD and her agency to make the name more memorable.
Her exact personal motivation for entering the AV industry has not been clearly verified through reliable public sources. What can be confirmed publicly is the career path from gravure scouting to her SODstar debut.
Awards and Public Recognition
Mahiro Tadai quickly gained attention after her debut and became one of the recognizable names associated with SODstar.
Publicly listed awards and recognition include:
SKY PerfecTV! Adult Broadcasting Award New Actress Award
SOD Award 2019 Best New Actress
FANZA Adult Award 2019 Topic Award
GeoTV × Men’s Cyzo Award
She has also appeared in non-adult media and variety-style programs, which helped broaden her public image beyond adult-video releases alone.
YouTube and Media Personality
One of the strongest parts of Mahiro Tadai’s public image is her YouTube channel, まひろにあ帝国 / Mahironian Empire.
Her YouTube activity has helped her build a more casual and approachable image. Instead of being known only through adult-video titles, she is also recognized by fans for her personality, humor, gaming-related content, cats, and friendly online presence.
This gives her a broader “online personality” image and helps explain why she has maintained a strong fanbase over several years.
Education, School Life, First Love, and Private Sexual History
Reliable public information about Mahiro Tadai’s school name, student life, club activities, first love, first boyfriend, first relationship, or first sexual experience could not be verified.
This distinction is important. Adult-video titles often use themes such as school life, first love, youth, or “first time,” but these are usually fictional concepts or marketing themes. They should not be treated as real biographical information unless Mahiro herself has clearly confirmed them in a reliable interview.
There is also no reliable public confirmation about whether her family, classmates, or people around her know about her AV career. Unless she has discussed this directly in a confirmed public source, it should be treated as private and unconfirmed.
Filmography Overview
Mahiro Tadai has a long-running filmography, mainly connected with SODstar. Her public catalog includes releases from 2018 onward, including debut works, regular SODstar titles, VR works, compilations, anniversary works, and collaborative or ensemble titles.
A general overview of her career by period is as follows:
| Period | Examples / significance |
|---|---|
| 2018 | SODstar debut; early monthly SODstar releases; VR appearances |
| 2019 | Continued SODstar releases; award recognition; ensemble SODstar projects |
| 2020 | 2nd anniversary / best compilation material appears in public filmography |
| 2021–2024 | Continued SODstar career, events, online popularity, YouTube growth |
| 2025 | Public filmography still lists new 7th-anniversary-related SODstar titles and compilations |
Because her full filmography is very long and database-dependent, a complete title-by-title list is best checked through official adult databases and publisher catalogs.
SNS and Public Accounts
Mahiro Tadai maintains a visible online presence through multiple social media platforms and official profiles.
Publicly known accounts and platforms include:
| Platform | Public account / status |
|---|---|
| X / Twitter | @tadai_mahiro |
| @tadai_mahiro | |
| TikTok | @mahiro_purin |
| YouTube | まひろにあ帝国 / @mahironiateikoku |
| Threads | @tadai_mahiro |
| TwitCasting | @tadai_mahiro |
| Official link hub | lit.link profile listing her as SODstar exclusive and Mine’S talent |
Her SNS presence is an important part of her appeal. Through these platforms, fans can see a more personal and casual side of her, including her interests, daily updates, events, and YouTube-related activity.
Fan Events and Fan Community
Mahiro Tadai appears to have an active fan-event culture. Public event information has included appearances such as Mahiro’s Bar, anniversary events, calendar-release events, and other meet-and-greet style activities.
These events suggest that her fanbase is not limited to online followers. She has also built a community of fans who participate in real-world events, merchandise releases, photo-related events, and anniversary gatherings.
Fan Reputation and Public Image
Mahiro Tadai’s public reputation appears to be built around three main qualities: cute visual appeal, an approachable personality, and long-term consistency as a recognizable SODstar performer.
Her YouTube success also makes her feel more familiar and accessible to fans compared with performers who are known only through adult-video releases. Her image combines adult-entertainment popularity with a softer, more casual online personality.
The safest evidence-based summary is that Mahiro Tadai is not just a short-term AV performer. She is a long-running Japanese adult-entertainment personality with award recognition, cross-media appeal, active fan engagement, and sustained online popularity.
Note on Accuracy and Privacy
This article is based on publicly available information. Private details such as education, family awareness, first love, first relationship, and personal sexual history have not been included as factual information unless they could be verified through reliable public sources.
In adult entertainment, fictional themes and marketing concepts can easily be mistaken for real biography. For that reason, this profile separates confirmed public information from unverified private claims.