Catharsis means the process of releasing, and thereby providing relief from, strong or repressed emotions. And Aien, or 逢縁, means encounter. It kinda makes sense, but not really.
Youre right. It does kinda make sense when you think about it. Do you have an explanation for chicken heart serenade?
Well, chicken is usually associated with cowardliness, and heart is with love or feelings, and a serenade is a musical composition or performance delivered in honor of someone or something. Serenades are typically calm, light pieces of music. I hope this helps.
I swear it's like this author uses a random word generator or throws a dart at a dictionary to name their manga