What this is
Akechiko! ~ The Black Diamond of Steam, or The Island of Madness ~ is a new musical theatre production in the SHINKANSEN☆R series, created by the acclaimed Gekidan Shinkansen theatre company. Directed by Mitsunori Fukuhara, the production is known for its innovative, high-energy approach to theatrical storytelling. The SHINKANSEN☆R series has built a devoted following for its distinctive fusion of physical theatre, live music, and bold visual spectacle that sets it apart from conventional Japanese musicals. This production features a headline cast led by celebrated voice actor Mamoru Miyano, joined by Tomohiro Kamiyama, Nicole Ishida, Shinya Hamada, Kohaku Shida, Makoto Awane, and Arata Furuta. Gekidan Shinkansen is one of Japan's most respected avant-garde theatre companies, and each SHINKANSEN☆R production is considered a significant event in the Tokyo performing arts calendar.
Who should go
This show is ideal for fans of Japanese musical theatre who enjoy productions that blend physicality, music, and experimental staging into a single electrifying experience. Anime and voice acting enthusiasts will be drawn by Mamoru Miyano's star power — he is one of Japan's most beloved voice actors with a massive fanbase. Theatre lovers with an appetite for bold, unconventional performance will find Gekidan Shinkansen's signature style deeply rewarding. Note that all dialogue and lyrics are in Japanese, so non-Japanese speakers should be prepared for an immersive but linguistically challenging experience. Book tickets as early as possible — performances featuring Mamoru Miyano tend to sell out rapidly.
Good to know
Tickets are sold through eplus.jp and pia.jp — both platforms accept foreign credit cards, and Lawson convenience store pickup (combini ukewatashi) is the most hassle-free option for visitors without a Japanese postal address. EX Theater Ariake is a mid-sized live entertainment venue in the Ariake district of Tokyo's waterfront area, with a capacity of around 2,000, and is well suited to theatrical productions with strong production values. The venue is modern and well-equipped, with a seated layout typical for this type of theatrical event. Arrive early if you plan to purchase official merchandise, as queues form well before doors open for high-profile casts like Mamoru Miyano. The Ariake area is easily navigated on foot from either the Rinkai Line or Yurikamome Line, and the venue is clearly signposted from both stations.
This event was sourced and translated from Japanese by What's On Japan. Details may change — verify with the official source before attending.