I would say Basilisk had a lot of tear-jerking moments for me.
Certain events had made me cry.
click to show spoiler
Danjo and Ogen's deaths - First off, it showed them into their past and showed that they were very much like Gennosuke and Oboro in the sense that they were in rival ninja clans and were very much in love. When a betrayal happened it showed their love dying then they killed off each other. It made me sad when Ogen started to cry before she died with Danjo
Okoi's death - When she and Saemon were communicated through a sort of hand signal as he was disguised as Yashamaru. She had killed Rousai and was just killed by Nenki.
When Gennosuke left Oboro and Subagakure - After the treacherous plot of the Iga was revealed and the war had begun, Gennosuke coldly left with Gyobu and Saemon, leaving poor Oboro to call after him helplessly.
Oboro and Gennosuke's deaths - Oboro killed herself off so that she may die first, and she couldn't bring herself to kill off Gennosuke because she loved him. As Gennosuke's sight return he watched as she fell to the ground, dead. He carried her body out to the river where their Grandparents had fallen and floated off, after Gennosuke commited suicide himself, as their Grandparents did.