I gotta say ~inside~ is really surprising me. I was afraid it'd be more like Ai no uta lost cousins, but it sounds more like the ballads and mid-tempos of ETERNITY, which are some of her best imo
Edit: just my two cents, I find it funny when people say BUT as a JPop sound example, not only it sounds very western to me but it was also produced by western people lol The PV is JPop af tho