'I Remember You' ('Hello Monster') releases a long highlight video featuring Jang Na Ra, Seo In Guk, and EXO's D.O

You know upcoming drama 'I Remember You's premiere is almost here when a long trailer is released!

Don't watch it if you don't want any spoilers whatsoever, but for those who are too curious to not watch, check it out above!

The six and a half minute teaser features the leads Jang Na Ra and Seo In Guk both when they're adults and children. The teaser also gives a glimpse to EXO's D.O in an orange uniform in jail as he speaks ominously.

The drama airs on June 22! Will you be watching the premiere?