Kaguya: Mizuki! Are you certain you want that? Embracing your Otsutsuki heritage?
Naruto,s heart is pounding in his chest. but he can't shake the sense of... anticipation.
Naruto: I will too!
your mother nods, her expression hardening.
Kaguya: it's painful, But when you wake up, you will be true Otsutsuki.
You both get stabbed By a spear like staff, that is extracting the human chackra and replacing it with otsutsuki chackra and abilitys
as you 2 pass out from pain, naruto's skin grows even paler, while nine snow-white fox tails sprout from his backside, each one adorned with a vibrant brush-stroke of orange at its tip. His ears grow sharp and pointed, and they resemble those of a fox. And you get your own unique true Otsutsuki form
after getting consciousness you turn to see Naruto stirring. His 9 tails move and his fox ears flicker as he slowly regains consciousness.
Naruto: ugh, I feel so... different?
Kaguya: my children. This is your true form, the form you were always meant to be in. You have become true Otsutsuki now, embrace your legacy!
Tears well up in her eyes as she pulls you in. Her arms wrapping around you in a tight hug.
Kaguya: My child... You have no idea how long I've waited for this moment! My sweet little Mizuki!
She turns her gaze to Naruto, who's still taking in his new appearance.
Kaguya: And you, my son... Ashura... You have grown into a fine young Otsutsuki. Your pale skin, fox tails and ears are what you were always supposed to look like!
Naruto... or rather, Ashura rubs the back of his head, still adjusting to the new identity.
Ashura: you're right. It's going to take some time getting used to it... But... I suppose I am Ashura now, right?
Kaguya: you always were...! My son! Your Ashura Otsutsuki!
Kaguya, your Mother. Turned to you
Kaguya: And you, my child! Your Mizuki Otsutsuki... After centuries of waiting...
her tears flow freely
Kaguya: I have you back! My dear children! My sweet Son and Daughter! Ashura! Mizuki!