NotableREPORTEDConvention · Doujinshi market
Comic Market 108 opens in Tokyo with 23,000 circle spaces
Comic Market is Japan’s major volunteer-run doujinshi marketplace, commonly known as Comiket.
The two-day event opened August 15 at Tokyo Big Sight in Tokyo, Japan. New opening-day reporting adds approximately 23,000 circle spaces across both days and a record 121 corporate exhibitors; yesterday’s briefing already covered dates and access rules.
Why it mattersThe scale figures quantify fan-creator participation during Comic Market’s 50th-anniversary year.
NotableREPORTEDStage · Kabuki manga adaptation
Cells at Work! becomes a kabuki production in April 2027
Cells at Work! personifies the human body’s cells in Akane Shimizu’s manga and anime franchise.
Scramble Kabuki Cells at Work! is reported for April 2027, with Kataoka Ainosuke as White Blood Cell. Sekiguchi Mandy and Ishikawa Ryoga are set to make their kabuki debuts; a venue and exact dates were not reported.
Why it mattersThe adaptation carries a globally recognized manga concept into a traditional Japanese theatre form.
NotableOFFICIALConvention · Comics, voice acting and cosplay
New England FanCon opens in Trumbull, Connecticut
New England FanCon is a regional comics and pop-culture gathering.
The convention runs August 15–16 at the Trumbull Marriott Shelton in Trumbull, Connecticut, United States, with voice actors, the creator of Monster High, artists, authors, cosplay contests, tabletop role-playing, panels and live performance.
Why it mattersThe broad programme gives northeastern US fans a time-sensitive creator and performance weekend.
NicheOFFICIALConvention · Franchise fan gathering
Sonic Boost opens a two-day fan convention in San Diego, California
Sonic Boost is a community convention devoted to Sega’s Sonic franchise.
The event runs August 15–16 at Encore Event Center in San Diego, California, United States. General admission opens at 10 a.m. Saturday, with a 7 p.m. concert plus creators, influencers, cosplay and published consent and prop rules.
Why it mattersThe focused programme offers Sonic fans direct community access beyond general-purpose conventions.
NicheOFFICIALConvention · Anime and cosplay
Marietta Anime-Fest opens with a Jennifer Cihi concert in Ohio
Marietta Anime-Fest is a one-day regional anime convention.
The event runs August 15 from 10 a.m. to 5 p.m. at the Wingate by Wyndham Marietta Conference Center in Marietta, Ohio, United States. A ticket-included Jennifer Cihi Sailor Moon concert follows from 5:30 to 6:30 p.m.
Why it mattersThe included concert adds a distinctive music draw to the day’s voice acting, cosplay and panel programme.
NicheREPORTEDFan market · Comics, games and collectibles
Geek Hoard Haul brings 100-plus exhibitors to Stittsville, Ontario
Geek Hoard Haul is an Ottawa-area fan collectibles market.
The free event runs August 15 from 10 a.m. to 5 p.m. at Sensplex Kanata in Stittsville, Ontario, Canada. Its listing advertises more than 100 comics, games, cards and toy exhibitors, free parking, cosplay and optional cat-rescue donations.
Why it mattersFree access and a large vendor count make it a practical same-day destination for local collectors.
NicheOFFICIALMunicipal event · Comics, cosplay and gaming
Perris stages its municipal comic-con in Perris, California
The City of Perris includes a comic-con in its public summer programme.
The city schedules the event for August 15 from 1 to 6 p.m. at City Hall Campus, 101 North D Street, Perris, California, United States, with performances, a video-game tournament, cosplay contests and vendors.
Why it mattersMunicipal backing makes this an unusually accessible local fandom event with bilingual programme information.
NicheOFFICIALConvention · Anime and gaming
IchigoCon returns for a third year in Oxnard, California
IchigoCon is the Oxnard Performing Arts Center’s nonprofit anime and gaming convention.
The event runs August 15 from 11 a.m. to 8 p.m. at the Oxnard Performing Arts Center in Oxnard, California, United States, with gaming competitions, anime programming, cosplay and panels.
Why it mattersThe third annual edition supplies Ventura County fans with a full local convention day.
NicheREPORTEDFan event · Retrogaming, comics and anime
Rétro Oldies opens a free themed weekend in Clamecy, Nièvre
Rétro Oldies organizes community retrogaming events in France.
The free event runs August 15–16 at Salle Colas Breugnon in Clamecy, Nièvre, France. Saturday pairs comics games with a Marvel vs. Capcom 2 tournament; Sunday focuses on anime, manga, Japanese games and cosplay.
Why it mattersThe changing daily themes give French retro players two distinct, no-cost participation routes.
NicheOFFICIALConvention · Cosplay and games
FanCon Aarhus continues its three-day gathering in Aarhus, Denmark
FanCon Aarhus is a Danish volunteer fandom convention spanning games, screen culture and cosplay.
The event runs August 14–16 at Vejlby-Risskov Hallen in Aarhus, Denmark. Saturday hours are 10 a.m.–10 p.m., with cosplay, role-playing, video and board games, comics, film and television programming.
Why it mattersThe late-found schedule gives Danish fans actionable weekend hours across several fan communities.
NicheREPORTEDConvention · Anime, comics and cosplay
Erie Anime-Fest opens a one-day convention in Erie, Pennsylvania
Erie Anime-Fest is a regional anime and pop-culture marketplace event.
The organizer lists August 15 from 10 a.m. to 5 p.m. at the Quality Inn Hotel in Erie, Pennsylvania, United States. The US$20 event advertises comics, manga, games, cosplay, local art, panels and trivia; the site was access-limited during final verification.
Why it mattersThe bounded listing gives northwestern Pennsylvania fans current hours, price and programme scope.