Most fics are centered round the Rei/Minako relationship, in whatever form it takes, depending on how you see it personally. There's nothing remotely explicit in any of the fics, however, even if they are a couple. Fics contain spoilers for all of the manga and all of the PGSM series.

Disclaimer:
I dont own the characters or concept of Sailor Moon, I'm merely borrowing them.

Return To Us
PGSM. Rei's thoughts as she learns of Minako's death.

Comfort Enough
PGSM. Dreams of the past life haunt the dying Minako and the stubborn Rei.

Still Not Here
PGSM. Special Act spoilers. They fight, they insult each other, and they storm off. Nothing out of the ordinary for Rei & Minako. Except maybe now things can change.

Sight of Souls
PGSM. They're the same...and they're different.

Innocent Agony
PGSM. She adored you. She might have had a damned twisted way of showing it, but she did. You were her world, then and now. So, no, Usagi, we didn’t lie. We protected the only thing she had left to fight for.

The Meaning of Peace
PGSM. 'Fix It' for the future Act 47, set after Act 42.

Please Remember Me
PGSM. Minako wonders what she would have done had her body not betrayed her.

The Myth
PGSM. Aino Minako is dancing in the shadows somewhere, waiting for her turn.

Avatar
PGSM. She has no reason to resist now. She will let them flood her body with chemicals and let them nearly break her before they manage an attempt to piece her back together.

Minor Notes
PGSM. Her voice was never particularly powerful and there were some notes she just couldn’t reach, but her presence, her voice, always filled the room.

Venus and the New Moon
PGSM. Does she know that the woman who holds her would have been her guardian, as she had been to her mother?

Take Me or Leave Me
Manga. “Its only a bit of fun, Rei-ko!” Minako exclaimed, smiling sweetly, trying to placate her.

Inheritance
Manga. The great heiress to Crystal Tokyo and future ruler of the Earth held no power whatsoever. She could never protect them.

Reunion
Manga. A tornado of pink hair and skirts flung itself through the door and into the older girl’s arms with a delighted cry. Momentarily stunned, Hotaru allowed herself to be spun about the room in a whirl of pink and black silk.

No Shade of Venus
PGSM. Minako didn’t so much as twitch. She dropped her gaze to the pills, then back up to Rei’s eyes.