First off, Nagtio's scene.
Second, Sonia.
Third, Nidai and his shiz.
Fourth, The Ultimate Gangster actually attends class.
Fifth, Hinanami.
Sixth, Chisa, need I say more?

But the future ark kills Asahina,making us feel true despair.

Hagakure Haiku:

He's a lazy bum,
His name is Hagakure,
Hagakure Haiku.

Its a masterpiece, isn't it?