Manga by author Js

What if your girlfriend comes to your house from the past when she was 16??! And your 31yo girlfriend is still here?! So you have 2 girlfriend now... What would you do? hehe

A future that is in distress because of the extreme population decline! People are disappearing... Love is disappearing. Kim Mi-wa has arrived from from a future of 500 years later with a futuristic tool that will allow love to activate through artificial intelligence, and has decided to test it out among modern day citizens...