mc had no reaction on how the kid could show up at her address the same afternoon they first met... or why.
And "oh, umi-chan once took me to this reiver"? Really? It was literally just earlier that very same day! Not that long ago either, as it was after work.
Also, "onee-san once told me"? Kid, that was just hours before!
Overall, feels suspiciously convenient that both of them hold attraction to eachother there in that scene, author.
My experience was the opposite. Started creepy, then became very creepy, only to turn even creepier (was certain it would be some kind of Näcken development/twist). Then became cute. Although that single "has to stay here forever" line instantly spiked creepiness again after lulling me into feeling safe. Was somehow absolutely certain she was 1-3 panels from being drowned, before it didn't happen.
Though at the end I
did wonder if it were going to turn into a crime of more mundane variety. But all's good so long as both parties are happy, yeah? I have read enough manga to know that in those stories it is always the onee being groomed, not the loli
Why line? The "very pretty here" one? I do admit it might be a reference to the famous line "suki ga kirei desu", as it's pretty much the same line sans moon.
Or do you mean "But I want to say by your side for as long as I can"? Because yeah, that is definitely a confession of some sort.
Or did you mean the horror line the loli gave on last panel of second to last page? About Onee no longer having any choice but to remain with the spirit forever, probably drowned in the river?
Or this. I did consider that one too, even if drowning felt more thematic.