Arc 10Divine Crystals and Homecoming
Lu Qing'an gathered Divine Crystals to strengthen his companions, while Xu Xuanyu revealed his connection to the Eternal Night Demon Emperor and Lu Qing'an welcomed his son Lu Zhengran to the Demon Domain. The arc ended with Li Cangxuan teaching Lu Zhengran and privately asking Lu Qing'an whether the boy was truly his son.
- Lu Qing'an captured a man-eating flower transformed into an Ominous Living Being, took its Divine Crystal, and used his energy body to seize a sentient red crystal that could slip into the void.
- Lu Qing'an learned about Divine Crystal grades and elements, then helped Xiao Qingyi, Xue Tianfei, and several friends refine crystals and rapidly improve their cultivation.
- At a feast, Lu Qing'an arranged Li Cangxuan and Zhao Wutong’s engagement, shared an affectionate moment with Xue Tianfei, and helped Xu Xuanyu advance to the Late Great Emperor Realm.
- Xu Xuanyu met Li Feiyu at the realm wall, gave him a Dao-Devouring Mystic Lotus, and revealed that Lu Qing'an was the Eternal Night Demon Emperor, while using that identity to frighten an old devil into fleeing.
- Xiao Qingyi confronted Great Emperor Yin Mountain and beat him nearly senseless, while Li Feiyu gave Li Yunshuang a Demon God Mother Tree leaf and asked her to find cultivators who could help him break through.
- Lu Zhengran left Green Mountain Academy for the Demon Domain, where Lu Qing'an welcomed him and brought him to the courtyard, and Xiao Qingyi entertained him with stories while Lu Zhengran mistook him for the Eternal Night Demon Emperor.
- Lu Zhengran met Li Cangxuan, who taught him a better saber technique, then returned inside and asked Lu Qing'an whether Lu Zhengran was really his son.