Junko x Ai as a perfect pairing in ZLS, they were both idol in their past life, both died just before realizing their ambition, have same lines "It's ok, I'll make it up". Sure thing that they are going to get married.
Latest episode makes me wish Rikka pulls an Akuma No Riddle and defies Akane's abilities by doubling down and aggressively trying to be more than friends