wait ive read this a long time ago..
i think it's this:
https://www.mangago.zone/read-manga/a_prince_in_a_luxurious_mansion/
argh no, sorry it's different.. cant find it ╥﹏╥
this!! finally.. if im not wrong..
https://www.mangago.zone/read-manga/i_m_now_homeless_so_i_let_an_aggressive_host_take_me_in_as_his_pet/
Its okay I didn't give a very detailed explaination bcz I also forgot
The uke from past, lost in the future then the seme offered the uke to stay at his place. One day, the seme got stabbed and the uke go back to his time. Then the uke try to prevent the seme from getting stabbed.