Anime girls w/ swords are the quickest way to my heart.

One thing I've gotten really into in the past few years is Touhou Project.
I love how a very niche, relatively low-qual vertical shooter game has expanded into the massive fan-phenomena that is Touhou as I know it.

Even though I became familiar with Touhou through Sakuya and Reimu and Cirno and all of the classically recognizable characters, Youmu definitely steals the show for me.

Not just the swords, but I really like how she is a servant of Yuyuko, there's a lot of themes and dynamics of Masters and Servants throughout the characters.
Also, she's a Half-Human Half-Phantom race. Meaning that the ghost apparition is actually a part of her (I didn't draw it on this, but it's also the curly insignia on her vest).

I could gush for a while about this, so I'll leave it here.