Starting with Immortality: Afk Leveling of Mortal Martial Arts Into Immortal Cultivation

[Longevity] [Steady] [Fear of Insufficient Firepower] [Single Female Lead] [Fast Progression Between Male and Female Leads] [Rebellious Disciple] [Woman Three Thousand Years Older and Ascended to Immortality] Shen Yuan transmigrated to a world of cultivation, only to be met with a demonic massacre that wiped out his village, leaving him an orphan at the age of six. A hellish start! Fortunately, his decision to practice martial arts awakened the [Idle Immortal Cultivation System], granting him endless lifespan and the ability to automatically cultivate all his skills and techniques while idle. Shen Yuan decided to keep a low profile and lie low for now, while he focused on leveling up and getting revenge by slaying demons. However, before the path to immortality was secure, unexpected changes occurred. He was pushed down by Xie Qingxian, the stunningly handsome master who was under the spell of "Bone-Corroding Love Curse"... After one night, Shen Yuan was stunned. If one becomes a furnace or cauldron and has their lifespan devoured by their master, will that help their master improve their cultivation? The master gradually developed a taste for it and became completely addicted. After Xie Qingxian regained consciousness, she went from feeling guilty to falling deeply in love. She wanted to get close to Shen Yuan, but she was also afraid of harming his lifespan. To this, Shen Yuan could only say: Master, your lifespan is limitless, do as you please! But can I take the initiative instead? Being served buffet-style food every day is really hard to bear! Xie Qingxian couldn't understand it either. Why does this disciple's lifespan seem bottomless and inexhaustible? ... Enemies, romantic entanglements, and sectarian conflicts follow one after another. To protect oneself and one's teacher. Shen Yuan could only silently choose to leave those forbidden secret techniques that burned his lifespan unattended. When a powerful enemy pressed in, Xie Qingxian was powerless to stop them. Shen Yuan chuckled lightly amidst the raging flames, silently chanting in his heart: "Ten thousand years of lifespan, burn!" In an instant. Gods and demons were terrified, and the whole world was astonished. ... Many years later. Shen Yuan ascended to the summit of all immortals, where countless immortals trembled and prostrated themselves. Damn it, I have no choice but to kneel. This monster treats forbidden techniques that consume lifespan like basic attacks!