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Source: https://www.dlsite.com/maniax/work/=/product_id/RJ389502.html

check out the original version: /g/2234705/5098ac1974/

With how bad the translation is, I can't tell if the succubus is supposed to be the one talking, or the boy is.
Especially with how often the pronouns are confused with who has the snake body or long tongue. Or even tits.

Base +7, DarkCocoon +6