MTL - I am the Father of the Villain - Chapter 261 261 "Don't be afraid, be good." (many bullet screens)...

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?

Pinning her tall body against the hard wall, he looked into her beautiful emerald green eyes as he spoke in a deep voice, "I have two options for you," his body came closer to hers as he continued, "Be my girlfriend. Or," his lips turned into a sly smile as he whispered close to her ear, "Be my boyfriend." He even dared to wink right before her as his dark orbs glinted amusingly.

Xie Lanyin has a beautiful face with white skin so relying on her face to live is no problem. Furthermore, the prince that she marries is a phonophilia (someone who loves voices/sounds).

A handsome man saving a beauty, he lets her sing songs to repay him.

Getting angry and yelling at him, he’s intoxicated.

At night when he wants to sleep, her words are hypnotising.

When he doesn’t want to sleep, her words become the best ……

Qin Wang: You think too much, the thing I like best is you as a person.

This is a story of a prince spoiling his wife, until even when he becomes a king, he’s willing to bend back so far that he could even break his waist – it’s that kind of story.

- Description from Novelupdates

Li Hua's reign as the twenty-first century's deadliest assassin ended in fire and betrayal. Her own sister, Li Min, turned their elite force against her, leaving nothing but ashes where a legend once stood.In the moment of her death, Li Hua's soul tore free from its earthly bonds, hurtling across the boundaries between worlds until it anchored itself in a new vessel in a realm of ancient martial arts and mystical cultivation. Through this impossible transition, her inner space remained intact—and with it, Little Firefly, her spirit companion.Here, where qi flows like rivers and mountains bow to those who master their cultivation, Li Hua will forge herself anew. No longer content to be merely an assassin of mortal flesh, she sets her sights on ascending to immortality itself—a journey that will shake the very foundations of heaven.