https://www.dlsite.com/maniax/work/=/product_id/RJ01298412.html

Base +6

気高き姫騎士リアンジュが魔物討伐に出たその日、
かつて自身が追放した半魔の男に囚われ、恥辱の限りを尽くされる。
媚薬効果のある触手の粘液で強○発情させられ、
なすすべもなく連続絶頂。
抗がおうとするものの、快楽に溺れていくリアンジュ……… ついには自ら、男のチンポを望む淫らなメスへと変化していく。

[Synopsis]

On the day that the noble princess knight Lien-ge set out to defeat monsters, she was captured by a half-demon man whom she had once banished and was subjected to the utmost humiliation.
She was made aroused by the aphrodisiac mucus of tentacles and was helplessly subjected to continuous orgasms.
Although she tried to resist, Lien-ge was drowning in pleasure... and eventually she transformed into a lustful female who craved the man's cock.

Base +22, blank415 +7

정석적이라 맛있군

Base +13