definitely haikyuu!!. the second series hasn't even finished, but i know for sure that i'll prefer it overall to the first series - and i absolutely loved the first series.
i haven't finished the first series of noragami yet but i love it so the second series is probably great too???
Haikyuu! Second Season 
Noragami Aragoto 
Owari no Seraph: Nagoya Kessen-hen 
Diabolik Lovers More,Blood 
Gochuumon wa Usagi Desu ka? ? 
Soukyuu no Fafner: Dead Aggressor - Exodus 2nd Season 
Kindaichi Shounen no Jikenbo Returns 2nd Season 
i haven't finished the first series of noragami yet but i love it so the second series is probably great too???
Owari no Seraph 2nd season is chill too :>