lemongrass77777
Charlie Weasley, blood traitor, Gryffindor seeker, and advocate for the rights of muggleborns, is in a secret relationship with Nathaniel Babalola, a future dark wizard, a Slytherin, and heir to the blood purist Heron family.
Nathaniel would do almost anything for Charlie.
Almost...
-------
Transgender man Charlie Weasley, Non-binary Tonks, Mentor Severus Snape who's mean to everyone other than Nathaniel, and good Slytherins who are trying their best and failing.
Takes place from 1989-1993.
Part 1 of the series Thus Always To Tyrants.