Here is the War Scenario if the Japanese tried to become an Empire again, oh yea I forgot to mention Japan used to be an Empire which fell during World War II

2015, November 4th- Japan buys Taiwan from China
2015, December 16th- Japan sends airstrikes into the Philippines
2016, January 3rd- Japan now occupies the Philippines
2016, January 24th- Japan sends forces into Indonesia
2016, February 14th- Japan takes Indonesia and rests forces to rebuild damaged materials
2016, April 1st- Japan goes into North and South Korea, easily toppling the North
2016, April 18th- The US declares war on Japan and sends forces into South Korea
2016, April 23rd- Japan pulls out of the South but stays put in the North
2016, May 11th- Japan takes over Malaysia with ease and reinforces the capital
2016, June 14th- The US drops an atomic bomb on Tokyo, devastating Japan
2016, June 16th- Japan pulls out of Malaysia and Indonesia to reinforce Tokyo
2016, July 2nd- The US raids the North, destroying Japanese fleets, South and North Korea are unified.
2016, July 24th- The US takes Taiwan and keeps it as official US territory
2016, October 15th- China takes Tokyo from Japan and claims half of Japans territory
2016, December 6th- Peace treaties are made and Japan regains Tokyo and Taiwan