Romance manga w/ parent/guardian MCs (2)

I’d been stanning the hero for three years, when I was suddenly caught red-handed by his tyrannical doting father, Duke Hades Louvremont. Only he thinks I’m obsessed with HIM.
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○ kid is 10 y/o

Following the memories of reading this book, right away, Lizelle picked up the boy who was caught in a tr*sh in a poor village. She took the lost Lapel and went to the duke. “This is the child the Duke is looking for.” Duke Chester said, looking at me with a doubtful glance, “I need confirmation, so you should stay with my child in this house for the time being.” The strange cohabitation of the three people started like that.
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○ kid is 5 y/o

Karinne, the daughter of Viscount Tyrian, is on the verge of getting sold off as a concubine. After sleeping with a mysterious stranger, Karinne gets pregnant. After deeming his daughter worthless, years later the viscount sells her off as a maid to the Grand Duchy. With no other choice, she proceeds forward only to reunite with the man who she spent that fateful night with.
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○ kid starts at 2 y/o
○ : abuse, murder, likely PTSD

More than a decade has passed since Hyojoo’s restless young days and she’s now the single mom of a spunky teenage daughter, Godam. But when Godam asks piercing questions about her father, answers don’t come easily.
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○ kid is 15 y/o
○ takes a while for the mom to become important
○ sequel to "I Got A Boy"
○ : violence, gore, murder, mentions of arson, child abuse, kidnapping, drugging, rape, cults, pseudo-incest in prequel that is mentioned

There is a famous fairytale. A kindhearted girl whose father and stepmother got married and became a family of five with her two stepsisters. The poor girl who was condemned by her stepmother and stepsisters when her father died. The very fairytale, Cinderella.
But I am not Cinderella, I am the stepmother.
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○ kids are 19, 18 and the third is around 18

I entered the world of my favorite novel through someone else’s body.
Of course, I just had to enter the body of the protagonist’s aunt, the selfish villainess.
According to the original storyline, in any case, my nephew was expected to leave my side soon.
Compassion for him grew, so I put my most sincere effort into tending for him until the day we parted.
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○ kid is 9 y/o
○ : child abuse (in the original story; briefly touched upon), violence

A woman wakes up to find herself in the body of a mad woman and mother of a young boy.
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○ kid is pre-primary age
○ : violence, violence against a child

The handsome "mom" Kano comes to the the house of Kohinata, a family of 6, all men. The oldest son, Kaname, could not accept Kano due to something that happened in the past. What will happen next?
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○ kids are in middle school and primary school/daycare age
○ I’m gonna give this a pass cuz they both kinda have parental roles

Two old highschool classmates met as the two are now becoming roommates. How would Le Ning cohabit with her old bully Xu Wan Yi and her baby girl?
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○ kid is 3 months old

Charlize Lienta regains memories of her past life, realizing she has been reincarnated as the villainess of a novel she once read and is destined to die at the hands of Archduke Calix after trying to kill his love. After regaining these memories, she immediately flees the capital. Returning a year later, she rescues a boy from the streets, only to find out it’s Archduke Calix’s long lost nephew.
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