The Chuunibyou Years for Parents Born in the 1980s

Four college students from different families each have their own story of youthful romance. After meeting Botan, an international exchange student from Japan, their love lives become intertwined in ways they never expected.

No transmigration, but the story weaves in (and occasionally throws in) anime, games, songs, Japanese dramas, and other nostalgic touches associated with the post-80s generation.

You could call it a campus-comedy take on Boys Over Flowers.

If you're curious, take a look and see what gets woven in (or thrown in) along the way.