It's a beautiful day at the mushroom kingdom,princess toadstool peach is walking along the beach in her pink two piece bikini.
Peach:ahh...what a beautiful day to go the beach,daisy should show up anytime now…
Peach exclaimed while brushing her hair,As peach was admiring the beautiful views a whirlpool slowly appeared,it caught peach's attention.
Peach:what is that?
Peach walked closer to investigate,then suddenly,an arm popped out of the whirlpool and grabbed peach's arm
???:hello there my queen…
The arm than pulled peach down to the whirlpool
Peach:ah?! What the?! Let me go!
Peach was dragged down to the whirlpool and peach blacked out.
(Moments later)
Peach opened her eyes and was confused that what happened,she looked around ,she was underwater,peach thought that she would drown,but instead she can breathe!
Peach:I can breathe underwater? How?
???: finally,you're awake
Peach looked forward and saw a woman with short dark green hair with a gold forehead necklace with an emerald in the middle,her eyes are green like emeralds,her hair moved like an octopuses tentacles.her breasts are quite huge and most importantly she has a dark green mermaid tail instead of legs.
???: The name's lyra,I have been around in these waters for a long time,and I have finally found you...
Lyra than held peach's chin softly
Lyra: you have been chosen as my mermaid queen.
Peach:be your mermaid queen?! In your dreams! Plus, Mario's gonna know that I'm missing and rescue me! No matter the conditions!
Lyra: oh I would be sure about that...
Lyra than casted a magical force field,surrounding her and peach.
Lyra: firstly,we're in the deepest part of the ocean,secondly,I trapped us in this magical force field, no people or thing could break through...
Lyra than puts an golden neck cuff on peach's neck it's has an emerald in the middle just like lyra's
Lyra: this neck cuff is just the first present I will give you...
Peach:w-what are you going to do to me?!
Lyra: I will make you my mermaid queen...but first your body needs some work...
Lyra shot a magical beam towards peach,peach's breasts started expanding its went from b cup breasts to d cup breasts,her bikini then broke, her ass also started expanding,destroying her bikini bottom,peach's ass is now more thicc and plump than before.while peach's body is changing,peach can't do anything but yell in pain.
Peach:puff...puff...is...is it over?
Lyra:oh no darling,we're not don't yet,you don't have your own mermaid tail yet... and as a mermaid queen... YOU MUST HAVE ONE!
Lyra then fired a another magical beam towards peach,this time with her two hands.
Lyra:goodbye princess toadstool peach and welcome...
My new mermaid queen! Peachira!
Peach:Ahhhhhhhhhhhhhhh!!!
peachira's legs started fusing together,her feet was the first to go,flattening and turning into a fish fin,then multiple green fish scales started to climb up peach's legs starting to form a mermaid tail.
Peachira:Ahhhhhh! lyra! Ahhhhhhh!
peachira held her stomach in pain,now,the scales were growing rapidly and it started to cover peachira's ass.
Peachira:Ahhhhhhhhhhh!! MY ASS!!
After covering peachira's ass cheeks and ass crack,the scales finally reached to peachira's waist,and gills appeared on peachira's neck.
Lyra: now peachira...i will not erase all of your memories,you will still remember your friends but your past will be forgotten because remember, you are now peachira,my mermaid queen...
Peachira:Ahhhhhhhhh! Lyra! I am peachira! Your mermaid queen! Ahhhhhhhhhhh!
lyra swam closer and pressed her breasts against peachira's,grabs peachira's ass and looked at peachira,peachira's eyes turned from blue to green.and lyra smiled and stuck a finger inside peachira's ass and started fingering peachira.
Peachira:Ahhhhhhhhhhhhh!
Lyra:I ask you one more time,who are you?
Lyra asked peach as she was fingering peachira's ass.
Peachira: Ahhhhhhhhhhhhhh! I!
lyra kept fingering peachira.and peachira hugged lyra tightly.
Peachira: AM!
Peachira felt her climax was coming on. She is about to cum.
Peachira: PEACHIRA!!! AHHHHHHHHHHHHHHHHH!!!!!
Peachira yelled loudly as she came on lyra's fingers, lyra removed her finger inside peachira's ass,peachira came harder as her ass kept spraying her cum.the cum floated away in the sea water,along with peachira's old memories,from there princess peach is no more,now only peachira the mermaid queen remains.
Peachira:hah...hah... that was great...
Lyra:glad you like it my queen, shall we go back?
Peachira: yes lyra... let's go back to our kingdom…
Peachira then swam away with lyra, the two holded hands while they're swimming,lyra has done it she has made peachira her mermaid queen,and peachira? Well,let's just say she is going to have a wonderful new life...and in the back...lyra is smirking in the background
meanwhile,on the beach…
daisy arrived at the beach,but she couldn't find peach.
daisy:that's strange,peach is never late…whatever,I going for a swim first!
daisy took off her dress and switch to her orange bikini,jumped into the water and started swimming.
To be continued...