Reincarnated Into Submission — Game [best]

Kaelen wakes up on the auction block. He is purchased by Lady Seraphina, who is currently on the brink of exile. She orders him: "Make sure my tea is perfect, or I'll have you executed."

: Elias, a failed pro-MMA fighter from Earth who was known for incredible technical skill but a "glass chin" (he could be knocked out easily). reincarnated into submission game

Here is a detailed story development outline, including the premise, world-building, and a narrative arc. Kaelen wakes up on the auction block