Japanese developer D-techno and Marvelous announced a crossover today (10th April), revealing that a new Osomatsu-san (おう松さん) mobile game is in the making. The game is named Shimamatsu (しま松（仮）).
Nothing more about the game has been revealed beside the launch of an official twitter, a website and that it will be published on iOS/Android. More details are expected to be out in mid May.
Osomatsu-san is an anime series based on Fujio Akatsuka’s 1962 manga series Osomatsu-kun (おそ松くん), which revolves around all sorts of mischief caused by the sextuplet Matsuno brothers.
Official website: http://shimamatsu.jp/