In Jain tradition, King Shrenik is remembered as a powerful king of Rajgir and a devoted follower of Bhagwan Mahavir in many accounts.

Kalsaurik Kasai is mentioned in some Jain कथा/आख्यान as a butcher, representing a sinful occupation based on himsa. In Jain stories, such figures are often used to show the law of karma:

• actions of violence bring bondage of karma,
• while devotion, repentance, and right conduct can lead to spiritual uplift.

If you mean a specific Jain story where Kalsaurik Kasai and King Shrenik are together, the usual moral is:

• King Shrenik had faith in Jain teachings and respected dharma.
• Kalsaurik Kasai symbolizes a life involved in हिंसा.
• Jain texts use such contrasts to teach that ahimsa, right faith, and right conduct are the path to liberation.

In short: Shrenik = a king associated with Jain devotion Kalsaurik Kasai = a butcher symbolizing हिंसा and karmic bondage

If you want, I can explain this in simple story form or give the Jain moral lesson behind it.