Da Tang Shuang Long Zhuan - Book 60: Chapter 4: One Night of Affection

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

A tribulation lightning strike allowed her to be reborn with a mutated space. Parents are deceased, but not to worry, she has an agricultural expert grandfather. People bully her, but that's no problem, as she is a cultivator. The space is barren except for a single broken sapling that only consumes precious metals. The sapling indignantly asked: Others eat grass and give milk, what about you? The little immortal sapling spat and said: Here, remember to exchange it for some RMB.

With the sudden announcement of the launch of the holographic virtual network, Chen Mo, a hacker, received a special commission to hack this system in a bid to halt advancement.

I became the childhood friend of the protagonist in a novel. The childhood friend who died from taking drugs.