Regulus who learned to be an animagus to sneak out of his room and onto his roof at night
Regulus who soon learned being an animagus comes in equally is handy to sneak around the castle at night
Regulus who crosses paths as an animagus with James when he was out for a prank, and he couldn’t stay away. its always easier to give into what he wants when he’s a cat
Regulus who finds out James is really good at petting
Regulus who acts like it didn’t happen at all
Regulus who keeps sneaking out to walk around and clear his mind and keeps every once in a while bumping into James, more and more until it’s every night he can’t escape James finding him to play
Regulus who starts actively looking for James because, well, James will find him anyway so let’s save themselves the time
Regulus who once a month can’t find James and james apparently can’t find him either, but he gets visits of a stag in the courtyard
Regulus who one night finds james drunk, after he snuck out of a gryffindor party, and keeps him company until he sobers up. James doesn’t, he talks and talks to the cat. At one point he tells him he reminds him of a boy he likes. they fall asleep together for the first time
Regulus who learned enough about animagi to become one and do silly things, not caring much about the details for the first time in his life. Regulus who therefore doesn’t know animagi can accidentally turn back human in their sleep, o even turn back into animals all without waking up
James who wakes up at 4am in some hallway, still tipsy and with a headache, and looks down to see regulus laying down on top of him fast asleep
James who says “i knew it” before falling back asleep and acting like nothing happened
Regulus who woke up an hour later, a cat again, in horror at how well he slept. He claw James’ hands to jolt him awake before leaving him there and going back to his room
James and Regulus who end up routinely sleeping on James’ bed, because James wants to and Regulus is convinced nobody will know anyway if he’s a cat
Regulus who turns switches between human and animal repeatedly in his sleep and James keeps acting like he doesn’t know but still charms his curtains every time so nobody will ever see
Regulus who wakes up from a bad nightmare in James’ bed and James hurries to comfort and reassure him
Regulus who is still in shock from the nightmare it takes him a second to realize he’s a human… around James
Regulus who takes evem longer to realize James isn’t reacting at all to the fact he is a human in his bed… he is Regulus of all people, in his bed
and then they kiss mwah mwah thank you