Compa's clinic, 1:30am
When they were younger, Compa spent many a moment patching up IF. Scraped knees, bruised knuckles, the occasional black eye from when she'd somehow kick herself in the face. For anyone else the job would be tedious, but the love between the two ensured every moment was treasured.
Patching up Blue Heart was a completely different affair. A redundant one, in fact. Goddesses could heal from almost any wound save for the ones Noire inflicted. Compa knew this. Looking after Blue Heart was an attempt to cling to normality. Cute little band-aids over cuts, bandages over bullet wounds, cream for burns. All of those were pointless, they'd heal themselves soon, but for Compa this was important. She knew Blue Heart was different from IF, and took it upon herself to remind the new Goddess that she is human at her core.
The war with Noire was a messy one for all of Gamindustri. Blue Heart's presence only worsened matters. Leading a group of rejects and nefarious guild members, Blue Heart raised an army title Those Who Hate The Sun. Various guerilla attacks were carried out on Lastation forces, often during skirmishes between Lastation and Planeptune. Blue Heart's aversion to the sun, the namesake of the group, meant the force struck during night hours and retreated during day. Blue Heart would come to rest at Compa's clinic, as always.
After one particularly nasty showdown, resulting in another piece of Lastation being claimed by the opposition, Blue Heart turned up at Compa's clinic once more. Covered in the usual scrapes and holes, Compa only nodded and smiled before reaching for the first aid kit under the desk.
To her surprise, IF was in Blue Heart's place when she lifted her head. Her girlfriend definitely seemed... different, somehow. The scarring on her face had persisted, and she was swaying like a drunkard.
Shambling over to Compa, IF simply collapsed into her girlfriend's arms for the first time in 5 days. In spite of worry, Compa kind of enjoyed being able to hug her and stroke her hair again. IF raised a hand to Compa's back, grabbing hold of her sweater for dear life.
"Compa I... I'm worried that I'm not me any more. When I transform I feel... wrong. There are these voices yelling in my head to make me do awful things. I have done awful things. Am I still IF?"
Compa ran a hand through IF's hand. "Yes you are, Iffy. You're still my Iffy. Always will be."
Her words were sweet and laced with affection, just as they always were. That was going to make this even harder.
IF pulled away from Compa, and took one of her soft hands in hers.
"Compa..." There was a long, uneasy pause. "I love you. I always have. I always will. But I'm a demon now. All those ridiculous villains and monsters we made up as kids? They... I'm one of them now. I can't come back from what I have done or will do. I love you, and that's why I have to leave you."
Time stood still. Compa's body ceased to function. No breath nor blink. The two stayed like this for minutes. Eventually, it hit her, and she collapsed against IF.
"I'm so sorry, Compa." IF ran a hand through Compa's hair, and turned her back on her.
"IF, please don't leave me" was all Compa could muster before sobs overtook her.
As she emerged into the moonlight once more, IF muttered under her breath;
"Goodbye Compa... Goodbye IF."