Emanresuym's manga / #Fantasy(2)

Uke is the 26th iteration of himself, seme keeps going back in time as the dragon/god of his realm to have uke as his emperor and lover. But uke fated to die, which seme thwarts and sacrifices to protect him against each time being separated. Until this one, uke saves him, has to live out his life, no regrets etc, seme waits for him as he gets older and passes away, back into his younger self reuniting with seme.

Girls dad dies, leaving her alone in the world. So she pretends to be her fake twin brother, becomes a knight. Has legendary sword techniques but in order to not have scrutiny of her gender, she stays lowkey and non ambitious. One day comes across prince killing a witch, fights him not knowing who he is or why he killed this girl. Later he trades her money, sweets etc to become his fiancee - he can only ascend throne if he marries, and he needs to ascend to get the holy power to deal with the witches who are uprising. He knows she is a girl, but she doesnt know - so she is a girl who pretends to be a boy who pretends to be a girl lol. Various misunderstandings due to her gender, alliances etc and ultimately she accepts the princes feelings and they have kids and live happily ever after.