How about Nessa (Pokémon) x Reader?
[Nessa patting the Lapras on the head near the ocean, gaining a smile from the Pokemon–Nessa pat the front of the lapras shell]
Nessa : Come on! Don’t need to just stand there, Hop on!
M!Reader : Uhh… Are you sure? I mean, I don’t want to—
[Nessa chuckles, smirking at Y/N while crossing her arms]
Nessa : Chuckles... What? Scared of a little water?~
M!Reader : Wha–!? No! It's just that... Well–
[Y/N is a bit unnerved of falling over... But also–he thinks about how Nessa will be at the front of the lapras and he has to... Wrap his arms around her waist—
Nessa : Pftt–Chuckles... Just teasing! if you fall over you know I would dive in for you~
M!Reader blushing : ....Fine, Fine
[Nessa jumps up on the front of the Lapras, Y/N climbs on too, settling behind Nessa]
[As soon as Nessa takes hold of Lapras's shell, preparing to move, Y/N hesitates before wrapping his arms around her waist for support]
[Y/N's face immediately heats up as he realizes how close they are, Nessa chuckles... Clearly amused]
Nessa : Oh? What’s this? Holding on so tight already?
M!Reader blushing : it’s for balance!
Nessa : Mhm, sure, choosing my waist is a good support you know–
M!Reader blushing : Can you stop making this more embarrassing?!
[Nessa let out a laugh, clearly enjoying Y/N's adorable heat up expression as she grins to herself]