MTL - Gao Wu: Awakening the Indestructible Body of S-class King Kong at the Beginning - Chapter 500

The ordinary 18-year-old Edo, during a nighttime walk, finds himself in a fantasy world where he gains a mysterious power that could shape his destiny.

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

[Longevity + Discipleship + No Female Lead + Lighthearted Humor with No Tragic Moments]When his master picks food, he spins the table there;When his master chants spells, he chats without a care;When his master takes rest, he sings a lively song;When his master lies late, he bangs the pot along;His master lives on long, but his life is rather short;His master lays him down on the hillside, as a sort;His master lifts a cup, but he won’t take a drink;His master shares a tale, but he won’t stop to think;His master holds a feast, but he leaves the table wide;His master calls his soul, but he’s nowhere to abide.Spring returns to the hills, with blooms so bright and fair,Yet master and disciple are parted, one in heaven, one elsewhere.