The top is a naive female octopus who has just come of age. The story is told from the top's perspective and is very cute.
To fend off her family's pressure to marry, she picked up a beautiful, puppy-eyed person covered in wounds from the roadside.
Amnesiac, with no family or identity, obedient and easy to handle. Once she'd gotten what she wanted from him, she had no hesitation about cutting ties with this pretty, useless thing who knew nothing.
The next day, the person she'd thrown out was squatting, filthy, at her door with a sack of deep-sea treasures on his back, asking to marry her.
On the fifth day, there was something off about her wife. She was powerful yet fragile, keenly sensitive to pain but exceptionally good at enduring it. She was intensely possessive but kept it well under control, and seemed to be deliberately imitating her everyday behavior.
On the tenth day, she discovered countless overlapping, twisted scars on her wife's body. She didn't care.
On the Nth day, her wife was a monster.
She realized she had fallen in love with a monster.
--
Darling, a tumor has grown inside my body. It aches constantly and drives me to cut off all my tentacles and return to your side. It makes me unlike myself. The human mechanic says it's called a heart.
It doesn't bother me. I love the pain. For a moment, it lets me be in sync with you.
--
An inhuman top who doesn't understand love and woos the bottom on her own, and a cold-blooded, self-serving beauty as the bottom.
Kinks, happy ending, one couple, a little angst.
Notes from when the little octopus was wooing her on her own:
"Star Calendar 1123, January 1. Hit by a meteorite and landed on an unfamiliar planet. Transformed into a human to adapt to an unfamiliar identity. Picked up by a timid native. Learned local customs. Offered myself in marriage. Rejected."
"Wife is beautiful, timid, and fragile. During sex, strength must not exceed one tenth. Hide my scars near her. She will be frightened."
"The creatures my wife calls family treat her badly. My wife says I am not her family, so she thinks I treat her well. Pleased today."
"Wife likes octopuses. My true form is an octopus. Wife likes me."
"Correction to yesterday's record: Wife likes takoyaki."
"Smelled my wife's tears. Salty, bitter."
"Changed into my true form and disposed of the person who made my wife cry. A native's weapon broke one tentacle. Disabled. Took the severed tentacle home and cooked it for my wife. She liked it very much."
"Wife discovered my identity and demanded we separate. Trapped wife. She likes tentacle sex."
"Raise wife."
"Wife attempted suicide. Let her go."
"Heavy snow on a low-level planet. Searched for wife. Wife said she could never love a heartless monster."
"Star Calendar 1124, January 1. Wife resolved her differences with her family. Correction: Family means a relationship closer than the one between me and my wife."
Theme: Hmm.