Z

Maybe only one got isekai'd, luca probably just turn back time

YEAH that would also be super cool, either way it has to do with like ... Living a life that you know what's going to happen in...?

In that case maybe you should read this :

http://www.mangago.me/read-manga/villainous_princess/ (FL is transmigrated into a world of a novel and take over the villainess' body, ML went back to the past with future memory intact, female antagonist is also went back to the past but to different body)

http://www.mangago.me/read-manga/beware_of_the_villainess/ (FL is transmigrated into a world of a novel and got the villainess' body, her female friend is the protagonist who repeatedly living the same countless life because time keep turning back for her)

http://www.mangago.me/read-manga/lady_baby/ (i think both FL and ML went back to the past)

http://www.mangago.me/read-manga/i_tamed_a_tyrant_and_ran_away/ (FL and second ML went back to the past, but i still don't know what the role of this second ML because he still rarely show up)

http://www.mangago.me/read-manga/it_looks_like_i_ve_fallen_into_the_world_of_a_reverse_harem_game/ (both FL and female antagonist are transmigrated into a world of a game, FL get the villainess' body, antagonist get the protagonist's body)

http://www.mangago.me/read-manga/the_twin_siblings_new_life/ (it has twins as protagonists, so it also counts as two people?)

http://www.mangago.me/read-manga/the_lady_s_butler/ (FL is transmigrated into a world of a novel and take over the protagonist's body, i think the original protagonist turned back time and took over other's body, but apparently she's a bad person despite she used to be a protagonist of a novel)

http://www.mangago.me/read-manga/the_abandoned_empress/ (both FL and female antagonist went back to the past, female antagonist is originally a modern korean girl who got transmigrated into FL's world)

http://www.mangago.me/read-manga/i_don_t_want_to_be_empress/ (FL is transmigrated to a world of a novel and got villainess' body, female antagonist is a modern korean girl who got transmigrated and is supposed to be the protagonist of the novel, the female antagonist will be FL's friend after 50 chapters or something *so she changed and stopped being an antagonist)

Also there's this :

http://www.mangago.me/read-manga/virtues_of_the_villainess/ (no one is transmigrated into a different world, no one turns back time either, but there's a novel that predict their future, so some of them try to change their fate, some of them try to live following the novel)

http://www.mangago.me/read-manga/i_m_the_ex_girlfriend_of_a_soldier/ (FL is transmigrated and become a novel protagonist, ML lived the same life that keeps repeating, so kinda similar with beware of the villainess in this case)