It was revealed that Satoshi Tsumabuki will play mass murderer "Frogman" 

in live action of movie "Museum". Japan Premiere of movie "Museum" 1
The Japan premiere of the movie "Museum" which is adapted from the psychological thriller of author Ryosuke Tomoe, starred by actor Shun Oguri (directed by Hiroshi Otomo, to be premiered on November 12th), will be held in Tokyo on the 13th. It was revealed that actor Satoshi Tsumabuki will play the mass murderer "Frogman".
Besides, in the rain scene, there is thunderstorm and frogman Tsumabuki along with some other frogmen spreading umbrella appear.