Cheater! Japan x reader

Golly gosh! A lot of you requested this and I was liek! JAPAN IS BAE! But eh! I've only seen one of these and I was like! Only one? But here it is! I am still continuing my Cheater America x reader x England but who caresss! I'm creating this so enjoy!

Your 3 year Otaku boyfriend is suddenly isolating himself away from you! What can you do about it! ;-;