This was.....far better than I expected.
I actually wouldn't mind seeing a REAL manga of Tanya adjusting to life as a tween/teen/young woman while still fighting against Being X.
(that would be secondary to the slice of life, but could be the climax of the series)
A crazy hentai would be she MARRIES Being X unknowingly and he doesn't letter her know until he's SURPRISE!! buttsecks balls deep in her butt.