Jump Then Fall.

Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Marlene McKinnon, Dorcas Meadowes, Marlene McKinnon/Dorcas Meadowes, Evan Rosier, Minor or Background Relationship(s), Barty Crouch Jr., Pandora Lovegood, Barty Crouch Jr./Evan Rosier

Fluff Internal Conflict Hurt/Comfort Some angst Kinda Alternate Universe - No Voldemort Minor James Potter/Lily Evans Potter Title from a Taylor Swift Song Endgame Regulus Black/James Potter (they're trying their best) minor rosekiller They're all good Regulus & Sirius Hate Each Other Regulus & Sirius Actually Love Each Other So They're Good Brothers There's Lot of Fluff Buf Also Plenty of Angst because jump then fall is so them