Smothered in Tentacles: A Degenerated Married Woman Crawls With Carnal Desires Mako Oda

触手に溺れて― 蠢く肉欲、堕ちた人妻 織田真子

After his wife passed away, Mayumi married Shingo, who lives with his son, Kazuya, who he has forgotten. She had a fresh start, and she was her family who started living in a new land, but Mayumi was unable to get used to the new land. Kazuya gives her Mayumi a surprise gift.