i actually forgot the name of the manga i have read
mc is the genuis wizard in the past after she died she got reincarnated into the body of a green haired noble lady who is engaged with a cold duke
but apparently after he figured out his wife can now use magic he started showing interest in her and they also have a son who is attending a magic academy there was a chapter where mc went to the magic academy that her son goes to and humbled the professor there iirc
another one is about mc who finally finished 100 worlds of getting rejected from the hero party so he went back to the first world for some reasons and he found out that the heroes lost so he decided to find out what exactly went wrong and go back to that world only to find out some are dead and an elf waifu was actually retired or smth and then she died while they two spent time watching the stars so he went back in time and decided to not try to get rejected from the party and save them (the elf waifu is a tsundere the hero of that world wields the fake holy sword at first then after mc resetted the world they gained the real holy sword after few chapters)
