End of Season 2 of flash no flashpoint travels to Earth 38 and visit his alien friend Kara tells her and she comforts him
Kara and Barry gets close and starts thing
Team flash doesn't know about Kara or time he went to her earth
Barry stops being flash to grieve but with help from Kara and her team bring him back into being hero
Winn and Barry becomes best friends
Mon el does come but Kara doesn't fancy him but trains him and so does Barry
Barry gets stronger and faster (Season9) with new abilities
Also Lena knows Kara is supergirl early and not angry
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The Spark That Saved Him (On Hold)
FanfictionAfter defeat of Zoom and death of Henry Allen Barry was thinking going back but he remembers a new friend on a different earth that team flash doesn't know so after leaving a note he heads to Earth 38