Just like the others, Shishupala will get very mad at Vishnu, and stealing Rukmini is a good place to start. Krishna takes Rukmini away from Shishupala at his wedding day. Rukmi and Shishupala go after Krishna and their armies battle. Krishna, however, can’t attack Shishupala there because of the boon. Krishna and Rukmini get away and Shishupala goes back to Jarasandha’s capital. He then offends the Yadavas but Krishna still can’t do anything about it.
Jarasandha dies and they blame it on the Pandavas. When Yudhistira chooses to bless Krishna, Shishupala flips out. It’s important that Krishna pardons Shishupala 100 times so that after 100, he can kill Shishupala. He also knows that it is his destiny to kill Shishupala.
Second half of the story is all about Shalva.
Krishna kills Shishupala
Bibliography:
Krishna and Shishupala by Kamala Chandrakant, Ram Waeerkar, and Anant Pai.