Shinomiya Saki, who lost her life due to her sister's betrayal, found herself back in her 16-year-old self. Desperately trying to change her tragic future, she was once again cornered by her family—until the young head of the Senryu clan, the strongest exorcist family, Soma, appeared. “You will become my wife.” Using her memories of returning from death and her newly awakened spiritual powers as weapons, Saki fights against her fate while discovering what it means to be loved for the first time. A Japanese-style supernatural love fantasy begins!

A clumsy girl who wants to make sweets for her younger brother asks a slightly gloomy, lonely boy for guidance! They're not family, but this is the beginning of a sweet and gentle relationship. (Source: Rimacomi Plus, translated)

[Original Webtoon](https://jp.piccoma.com/web/product/188432)

As I was attacked by a demonic beast and my consciousness faded, I realized I had been reincarnated as Rail Vanstein, a mob character from the otome game "Seventh React." In the normal scenario, I should have died here, but for some reason I survived! What's more, Falk Sambur, the eldest son of the marquis and a popular childhood friend with a shady past, has transformed into an overly protective, doting, and sweet character! Has this disrupted the flow of the scenario? If it continues like this, won't everyone die in a bad ending...? I resolved to not let Rail's presence further disrupt the game's original scenario, but... *"I promise I'll always protect Rail."* Even after enrolling at Silvalence Academy, the setting of the game, Falk continues to spoil me. He somehow becomes friends with Sarah, the original protagonist, and strangely attracts attention from the other characters... Why doesn't everyone just follow the script?! (Source: Kadokawa, translated)

https://www.cmoa.jp/title/329518/