Rewrite of Crisis on Earth X. Kara Danvers and Barry Allen have battled and overcome the worst, but what happens when there newest challenge they must face is themselves. Watch/ read as Kara and Barry fight to protect their Earths from there most powerful threat yet. Why are the Earth X'ers here, what are their true intentions, and can Kara admit her feeling for a certain Scarlet Speeder before it's to late? Find out what happens in Volume 1 of Superflash - Crisis on Earth X.

Kara Danvers is looking for a new apartment and Barry Allen is looking for a new roommate. Trouble happens as they both try and keep their identities a secret. Basically my take on the "A superhero story where the villain and the superhero are roommates and they keep making excuses to each other about why they are out all the time and they stitch each other up after battles but neither has any idea the other is their nemesis and they keep having to lie to each other about why they are covered in bruises. Plot twist: They're also attracted to each other." Tumblr prompt The only difference being they aren't enemies.

After Iris goes missing, Team Flash work around the clock to locate her. Barry stops responding to Kara's message and the Kryptonian grows worried. She travels over to Earth-1 in order to discover the truth. Finding out Iris is missing, Kara volunteers to stay on Earth-1 and find Iris before it's too late. Elsewhere in the darkness, a Speedster and Kryptonian unite to destroy their enemies. The Flash, and Supergirl have defeated every threat that's come their way, but on the darkest of days, sometimes even the greatest heroes fall. [UPDATED EVERY WEDNESDAY & SUNDAY - SEQUEL TO 'HEROES JOIN FORCES'] Thanks to @meekayylaa for editing, proof reading, and putting up with my constant rambling about Crisis On Earth-1! She's been a major help, and without her I doubt we'd be here right now!