Traveling Through the Continent of Wisdom World

(Maximum level start) We were supposed to be in love till the end of time, but you had no choice but to take the first step, build a grave, and lay in the coffin. You lay down in the coffin and closed your eyes. I don't know how long it took, but the grave was already covered with weeds. The male protagonist opened his eyes, wait? Where is this? It's only right that I die... In this life, I'll work hard to upgrade just to protect you.