Fics like The Arc Moon System

On his way to Beacon, Jaune Arc falls into a mysterious cave and discovers a secret power hidden for millennia. Featuring a competent Jaune trained by his grandfather and a lite-system, how far could Jaune Arc go in this gods forsaken world? Expect AU

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Jaune Arc, Single Father by DodgerTalon (RWBY)
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Messages Across The Void by AliasEinzwerthos, AzemTheEverRecording, Narvgana_The_Void_Phoenix, Pestilence36, SonictheJedi2013 (僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Toriko (Anime & Manga), more)
Grimm Nightmares by AceReaper (Bloodborne (Video Game), RWBY)
Huntress' Favorite Thorn by Fusionfool3 (RWBY, Fire Emblem: If | Fire Emblem: Fates, more)
Black Rose Blooms Silver by CyberQueen_Jolyne (RWBY)
The Arc and the Overlord by linkjames24 (RWBY, オーバーロード - 丸山くがね | Overlord - Maruyama Kugane, more)
Knight and justice by Paxkun12 (ダンジョンに出会いを求めるのは間違っているだろうか | DanMachi | Is It Wrong to Try to Pick Up Girls in a Dungeon? (Anime), RWBY)
A Ripple Across Worlds by Orangeup (Persona 5, The Legend of Zelda: Breath of the Wild/Tears of the Kingdom, more)
Displaced by StarYeti (RWBY)
Schnee: Hero or Huntress by Calder05, KriegSchnee, Skyfyre56 (RWBY, RWBY: Grimm Eclipse (Video Game), more)
Linked in Life and Love - Act IV: Menagerie of Mad Maidens by l_OmegaInfinity_l (RWBY)
Playing For Keeps by BackslashEcho (RWBY)
White Knight Errant by DodgerTalon (RWBY)
Jaune's Neverending Nightmare by herjoh, hj (RWBY, Bloodborne (Video Game))
Breathe by Thatkircguy (RWBY, 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime))
Soul of Love and Bravery by ShadowSnowdapple (RWBY)
Arc: Luckiest Man Alive by Hyde77 (RWBY, Naruto (Anime & Manga), more)
King Of Champions by VimesenthusiastAO3 (RWBY, Harry Potter - J. K. Rowling)