here are two light novel series you should tottally read
no dont read it

this is the first one
heres the cover of volume 1

the main charactor is there but it aint the girl
no its the water

the title is in japanese
iseki onsan ni tensei shita ore no kounou ga tondemosugi -  anta no naka go kimochi li wake jani n desukido!?

which translates into english as
I was reincarnated as a hot spring in an alternate world and im way to effective - its not like it feels good because im inside you or anythng!?

theres also another one
heres the cover of volume one

again the main charactor is there buuuuut
its not the girl
its the vending machine mehind her

heres the title in japanese
jidouhanbaiki ni umarekawatta ore wa meikyuu ni samayou

in english it is
reborn as a vending machine i now wander the dungon

yeah you can find the volumes oline just like search em up
read em im not goona
but if u wanna haha ha ha
-_-
go ahead