Aishara will do nothing tbh. When the wedding ceremony is takin place the priest or whoever he is will ask if anyone is against Aqua and Tiara gettin merried and Aishara is about to rise a hand but Akira?(1st heroine) and forest fairy king are like: not on my watch and stop her. Thats all from the ceremony. Later one sea fairies are stealing MC cookies thet she bakes (you know some serius bulling) just coz they can sesne that 2ndheroine is sad and crying, so they reflect her feelings (bcoz she was blessed by sea fairy king). But later she (2nd heroine) finds out about that and goes and asks the sea fairy king( who happent to be a woman, but i will stick with king idk if its like a title thing,but hey in Poland we had a female king) and the king is like nah we dont like her not bcoz of you. There was also a thing that Aishira was the only person blessed by sea fairy king, bcoz she dont like humans that much and she blessed 2ndheroine only coz she was madly in love with her ancestor and Aishira reminds her of him. Its very messy but I will tell you about the sky fairy king. So Aqua is blessed by him, idk if he was bleesed from the begining og manga or if its the next arc thing. So Tiara and sky fairy king have a good relation bcoz cookies and baking and all that shit. And sea fairy king is jelly of that relation, coz sea and sky fairy kings have cruch on eachother, thats why she dont like Tiara. I know mess. And they can not be together coz their elemenst are not compatible or something like that. ah and the ske fairy king wears womens cloths bcoz he thing that sea fairy queen hates men (she kinda does) somethingsomething and at the end of this arc the talk and happy end. I can tell you about the forth fairy king but its like a major spoiler. The spoiler that above other spoilers
So there is the forth fairy king star/celestial fairy king. He is like the king of the fairy kings and he created the kingdom thet Aqua is prince of(something forrest, idh what the autor take while creating some of names in the novel but i want some of that). Thats the basic of star fairy king. So Aqua and Tiara are again in the Lapis Lazuri Kingdom(again those names) for the wedding of Akira and the prince(idk his name). While being there Aqua gets a message that stars are vanishing from the sky in somethingforrest and they are like wtf lets go back. And in the kingdom some wierd shit happens. Like the crops are not growing and stuff so Tiara helps coz she was blessed by forrest fairy king and he helps too. So all that shit happents coz star fairy king is not doing good and he basically gives power/ magic/mana to other fairy kings and he also idk balance the nature, stuff like that. So everything is bad bc he can not control the magic power that is given to him as a star fairy king. And when magic overloads him and it goes to his wife (yeah he have one) but she can not storage all this magic and she becomes a terrible monster ╮( ̄. ̄)╭. (There was also a moment where she took shape of animals and met with Tiara, idk shen she was going to the wedding) So they defeat her (before they came back from akiras wedding she blessed ring for them, at this point I had forgotten that she was a saint). After fight star fairy kings wife is back to normal and bcoz this thing could happend again Aqua becomes new star fairy king and Tiara since she dont really have magic inside her she is like the perfect vessal. EX Star fairy king and his wife are travelling across the kingdom. Novel is still ongoin if im correct, you can read it on novelupdate
Spoiler me plz, o novel readers!