A series of unrelated short stories about sisters with brother complexes or vice versa

When darkness falls on the foggy streets of London, demons and monsters emerge to prey on human life. But demons aren't the only ones prowling the streets. Two women have picked up the fight as humanity’s front line defense against the darkness—a young gun-toting nun named Sister Meg and her mysterious, eternally youthful partner Angela. Together, they have made it their life’s work to spend their nights hunting the vile demons that stalk mankind.
(Source: Seven Seas)

She is the perfect student, beautiful, clever and with lots of friends... He is an ordinary boy in the class, staring at her from afar but one day he sees her in a very compromising situation! How will she react? The lives of these two will now intermingle with totally unexpected outcomes!

(Source: MangaUpdates)