BL:Reincarnated/rebirth/esikai/AnotherWorld/Gameworld

>shounenAi
>historical/Cultivation
>Time-loop(?)/reincarnation
>Protagonist Villain(?) x (I forgot what's MC's role)

{I done hundred and a half, now I'm lamenting.a feel of regret?}
{I felt frustrated while reading. It's not a bad manhua(?) it has a real life sense in it.}
{I don't really know how to explain so, yeah.}
>Historical/Cultivation
>blade x sheath (kinda like guide and esper)
>Master x discipline