A monsterous blue jacket update is coming soon to popular Japanese mobile game Monster Strike!

Lupin, Goemon, Fujiko and Inspector Zenigata will be making an appearence in a special event quest, which eager monster hunters can access from tomorrow, on September 11th. No sign of Jigen, though. We guess he has more important things to do, like visiting the dentist!

In addition to the in-game event, Monster Strike have teamed up with TMS and have launched a viral marketing campaign, taking place in both the Twitter and real worlds. Players must locate several Lupin themed posters around Japan and Tweet their finds to unlock cool new stuff. Be sure to act fast though, as the campaign will end on September 17th (Thursday) at midnight.

[Source: Monst-Lupin Official Event Site]