Interesting list, Trang
Glad to see so many people who worked at TG at the top.
Kana Hanazawa up there is expected
Kana Hanazawa is a really talented voice actress. I love her voice.
About TG, the voice actors were one of the only saving graces of the anime. I mean it. Kaneki's voice actor did a phenomal job if you ask me. Just found out that he's on the list, too XD It's Natsuki Hanae
It depends on what type you're looking for. For lighter, but still seinen series:
Song of the Long March
Gangstaz
Onepunch Man
Sun-Ken Rock
The Breaker
For a darker, more psychological series:
Oyasumi Punpun
I am a Hero
Gantz
Vagabond
Afterschool War Activities
Just remember that seinen series have no filter: meaning that some of the material that you'll find in them will be hard for even full adults to digest. So tread carefully. If a story becomes too much for you, just stop reading it.
The Breaker and One-Punch Man seinen?
You better warn her about Sun-Ken-Rock about those three chapters...
Anyways, she's in Haikyuu fever right now
I got her into it XD You should check out the anime. It's gold. I'm sure you'd like it if you gave the anime a try.