The transmigrated villainess and the reincarnated trash

A story about a 89 yr old man, getting reincarnated into another world into a newborn body of a child, the son of a duke. Confused to the situation the old man didn't acted like he was but instead acted what his new body should be, as a newborn child. At the ceremony to determine his ability and class, for almost 8 yrs of hiding his true nature, trying to fit in as an 8 yrs old child in the family, he was disowned by his own parents after he only receive a body strengthen class, a lowest class of a fighter should have, can he survive the world when he didn't know he was in an otome game?
This is a story about a 50 yrs old window lady, getting divorced by her ungrateful husband, and was even abused by her own 2 sons, she then died at her own room, with beaten body. Giving her another chance, she was transmigrated into a new body, the grand duke's only daughter. But it turns out, she realized she was living in the world of once book she read, and a game she once played, an otome game. Can she survive the world, when every memory she has on the game and book was now a fuzzy memory?
This is a story about 2 individuals, one lucky to his past but misfortune to his present, while one is fortune to her present but badluck to her past. Can both survive the world, when they both are stranger to their new world?