Get the honest dream-world Tenshi to say "If I get close to the misfortune aura I might get swallowed by it!"

To Shion, who is exploding with misfortune, Jo'on will heap praise, saying things like "Nee-san is reliable!" and "The Most Despicable and Disastrous Duo is sufficient with just Nee-san!" and such and in the end,

Jo'on, who secures her position beside Shion, wants to be beside Shion despite her misfortune characteristic because she loves her that much.

This is my "being with Shion is her happiness" theory.