Mysterious alien (?) tech appears, check.
The Kei-chan School of Brazen Puppy-Dog-Eyed Panty Removal , strikes again.
Creepy internet, is creepier than ever.
And now... weird giant evil once again demolishes swathes of Tokyo and New York!!!
As to the romance... it's actually so cutesy-sweet (if a bit shotacon) that it's throwing up a gazillion death and disaster flags galore by Oku Hiroya standards.
Gotta wonder if the title and the first cover give the girl plot armor, though.... but if so, does that mean the MC-apparent is about to punch his underaged clock?! Or is Oku-sensei delighting in messing with reader expectations again?????