The Last Incubus with The Vice and Valor System - Chapter 180 say

After nearly been killed by his classmates, Dave found himself running along the street until a giant meteor strike hit him.Moments later, he woke up only to find the world around him in chaos. It’s an Apocalypse![Welcome user, you have been granted the beast taming system!][Combat Skill: Black Belt][Swordsmanship Skill: 100% Skilled][Gun Shooting Skill: 100% Accurate][All Skill has been Maxed out, but Energy point is needed to tame, control and summon beasts]To obtain energy points, he needs to be in an interaction with the opposite gender; a female. The interactions were things that Dave hadn’t done before, but he was more than excited to try it all.“Is it just to kiss to obtain energy points? I’ll gladly kiss her.”“Wait that isn’t enough? I need to explore her body instead? Okay, no worries!”With this, he had another side goal, and that was to create a harem of girls to aid him in his journey to become strong in this chaotic world.Join Dave as he became even more stronger, tamed numerous beasts, and fought down whosoever stands against his goals.

After an accidental death, in order to continue to live, Gu Bai had to choose to go through various wonderful books to complete tasks.

Every time he became a variety of small cannon fodder inside the story, Gu Bai’s code of conduct when completing task is – by all means, don’t be inferior, don’t be shameless, don’t be upright… hold on to a golden thigh.

… N times after transmigrating

Cannon fodder: (angry contempt) … You’re already so powerful, why are you still shamelessly holding on to a golden thigh to deal with us!?

Gu Bai: (deadpan) That… holding and holding… got used to it…

- Description from Novelupdates

Cui Heng was transmigrated to another world and the system told him that the new world he was in was a high-grade Xianxia world.

Disclaimer: This story doesn't belong to me, I posted it here just to use the audio book feature of the app.For most, becoming a member of the Elite 4 would be the culmination of their Journey. A great achievement that solidified your status in the annals of history. For me, it was just the start of my journey. Hopefully, everything stays Normal.A pre-canon self-insert into the world of Pokémon.