So I live in north Texas and my older brother and his family live in norther Virgina/DC area so I only get to see him and his kids like once every two years. Apparently his two oldest daughters (one is going to be a freshman and the other a sophomore) are really into Anime and want to buy manga. With anything the slightest bit in the "nerd sphere" he always tells them to contact me, and so they texted me and asked me all about different anime and what I would suggest.
So I know what I will be sending them this Christmas. I love how unlike western entertainment Anime/Manga understands who their audience is and caters to it, so what would be ideal for a teen girl? I know the older one enjoys Attack on Titan and said she likes stuff with romance and the other one loves Vinland Saga and I told her about Ah My Goddess, and she seems to like that one so far.
Any suggestions would be appreciated, and thank you in advance.
A bunch of good suggestions already posted. I'll add the Fate series, especially Zero. It's not as grim as AoT (at least from what I've seen of the latter, I'm not super familiar), but it's still grim at points, complex, and well animated. Complicated yet approachable, I'd say. takt op.Destiny for the same reasons, perhaps.
And, I can't attest to these, as I haven't seen them myself, but these are well reviewed romaceny ones geared a bit more toward females, but also still actiony: Snow White with the Red Hair, Yona of the Dawn. There's also more nerd culture focused romances like Wotakoi.
Also, inspired by some of what others mentioned here, there are cutsier slice of life animes like I've Been Killing Slimes for 300 Years and Maxed Out My Level, and Banished from the Hero’s Party, I Decided to Live a Quiet Life in the Countryside.
Also, I almost want to say So I'm a Spider, So What?, but that's probably better for people who have watched more isekais, as it does have a bit of fun with the genre.