Gender-Swapped Crossover: Yukinoshita's Wife from the Start

[Top-Tier Sweetness, Cuddles, Multiple Heroines, Multiple Worlds, A Hodgepodge, A Must-Read for Real Men, Everyone Gets a Happy Ending, Slice of Life, Romance, Redemption, No NTR…]

First and foremost: the protagonist changes from a man into a woman, but not completely! In other words, she's a futanari! Normally, there's nothing there, but she can make it appear when needed.

Don't worry, the protagonist won't be… and still has a man's heart.

[Main worlds: My Teen Romantic Comedy SNAFU, Tokyo Ghoul, High School DxD, Saekano, The Pet Girl of Sakurasou, Charlotte, Rascal Does Not Dream]

Mrs. Yukinoshita and her Haruno-branded cuddle pillow

Yukino and Yui-branded lap pillows

A big cat treat tower to feed the little catgirl, Tashiro

Steal and purify the Red Dragon Emperor, taking Makoto's place.

Defeat Kousan, taking…'s place.

Rias and Akeno's enormous breasts, tempting him

The devoted helper to every anime waifu

The savior of Touka, Mai Sakurajima, Shizuka Hiratsuka, Mashiro, Megumi Kato, Sora…

Later worlds: Akame ga Kill!, Guilty Crown, Black Bullet, Date A Live…