The Ultimate Life Form was created by Atlas as a solution to deal with the Grimm. But, the Ever-Night Order had other plans regarding him. They thought he would be the excellent Protector of Rubindia Constance Rose-Evernight, one of the daughters of Galbatorix.

It has been over a year since Jaune gained the memories of his previous lives and awakened the gifts he was given before his reincarnation. One of the gifts was the Book of Magic Knowledge, which contains all the knowledge of magic, but must be learned one at a time. The second gift, however, was something far surpassing the Book of Magic Knowledge; it is known as the Unlimited Enhancements. This ability gave Jaune the power to reach heights unknown throughout the Multiverse and outside of it. No Lemon - 1k words per chapter

Before jaune was enter Beacon academy he was summoned to another by a goddess to save her world from demon king. After defeating him he is transported back to remnant specifically the kingdom of Vale where he meet ruby rose where she fought against Roman Torchwick.

Jaune Arc dies in the distant future after his final battle against Salem and his soul is sent to his past self five years before cannon and merge with that past self. Now armed with future memories He aims to make a difference and become the Golden beacon of Hope. * Definitely no harem*

just the Sakamaki's Mukami's and Tsukinami's reacting to certain scenarios

After Jaune's transcripts were revealed by Cardin Winchester, everyone betrayed him and his entire family disowned him... well everyone except Blake Belladonna, who is still friends with Jaune since she didn't want to feel like a hypocrite due to her past. Blake began to train Jaune so his fighting skills can be improved in combat and overtime, they began to develop feelings and confessed their newly developed love to each other, then kissed passionately. Then one day, Jaune is seen at the edge of a cliff, trying to unlock his semblance and eventually, he unlocked something in him..... But it was not a semblance at all because when he saw Grimm behind him acting scared of Jaune, he saw that his skin changed from normal human skin to a pinkish red skin color, meaning that he has become an INCUBUS!!! After his transformation, a portal opened up and sucked him through, sending him to the Goetia Castle, where he met Octavia and allowed Jaune to stay with her since he basically has nowhere else to go. (Helluva Boss belongs to Vivziepop & Spindlehorse) (RWBY belongs to Viz Media)

In between semesters of Beacon Jaune was dragged into the world of gods and magic trying to keep his life as a huntsman in training and as a Campione separate will he succeed or both will clash?

This is from Arianarobloxgeek's book (originally mine but I discontinued it) 'The Crimson Triplets'

Ruby rose and her husband Jaune arc were the last two people that survived the secret war between both Ozpin or Ozma and Salem as the world ended in a bright light they held themselves into eachothers arms knowing that this is their final goodbye and hoping to see eachother on the other side but when opening up their eyes they see that they were younger again and that Beacon was standing but then when they see eachothers younger selves THEY WERE SENT BACK IN TIME!?!?! read and find out how they will change their future will they succeed or shall it end in a far worse fate (I don't own anything related to RWBY that belong to Monty Oum RIP)

Tadano Hitohito was nothing more than your average teenager, but not until he met a girl on that fateful day on the street and began his bizarre life. It wasn't the life he was expecting, but hey his life wouldn't be boring anymore. Welcome to his bizarre life.