1-PARASYTE:THE MAXİM:İ never thought would like this anime but i really reallly like it.İ like characters i like story i like romance so you should definetly watch maybe i like it so much because of i watched this anime when im out of seinen kind anime
2-HELLSİNG ULTİMATE:Great vampire,gore,seinen with op mc anime you should definetly watch if you like this kinds i love alucard i love the saint and i love other characters too
3-MONSTER:You always curious about this animes every episode this is all i say.
4-BERSERK:too much thing to say about this anime maybe it how affect all the genre coming after it words not enough now maybe later we talk about it and if you dont like anime then go on with manga.Manga is more great but mangaka die in recently .....
5-AKAME GA KİLL:Well after you finish this anime pls read manga :) about anime great seinen with assasins its simple its wonderful just watch it