Fics like Rimuru, Princess of the Storms.

What if Rimuru was literally born as a slime and from Veldora's magicules instead of being reincarnated. That's it.

You may also like

1. Record of Isekai by ObsidianNoir (Record of Ragnarok (Manga), 異世界かるてっと | Isekai Quartet (Anime), more)
2. Scorching slime by FoofyFang (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse)
3. Finally Living As Your True Self by RubyMoonlight (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse)
4. I'm A Spider - Wait, What? by melovecats (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse, 蜘蛛ですが なにか? | Kumo desu ga Nani ka | So I'm a Spider So What? - Okina Baba)
5. Quirks, Gourmet, Demigods, Dragons, Slimes and Aliens, Oh My by AliasEinzwerthos, AzemTheEverRecording, Darth_striker117, Orion_the_Omniversal_Watcher (僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Percy Jackson and the Olympians - Rick Riordan, more)
6. Boku no Slime Academia! by via_the_cryptid (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia)
7. Slime and Fox by Tired_Sky (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga))
8. Shizu, Lord of Wisdom by Willsteredge (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse)
9. Birth of a Celestial Sanctuary by Nightmix (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse)
10. 𝕿𝖍𝖊 𝕭𝖆𝖑𝖑𝖆𝖉 𝖔𝖋 𝖙𝖍𝖊 𝕾𝖑𝖎𝖒𝖊 𝖆𝖓𝖉 𝕰𝖑𝖛𝖊𝖓 by Empress_Of_The_Sun_Writer (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse)
11. Harbingers of Change Rewritten by DukeCheburek (オーバーロード - 丸山くがね | Overlord - Maruyama Kugane, 転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse, more)
12. A Bored God Is Bad for the World by PolarisChronicler (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse, ありふれた職業で世界最強 | Arifureta: From Commonplace to World's Strongest (Anime), more)
13. The Reincarnations of Veldanava by MarloweG (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse)
14. Revolution of Healer - EN Version by Blightmansion (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse, オーバーロード - 丸山くがね | Overlord - Maruyama Kugane, more)
15. The Consequences of Chaos by NiceApep (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse)
16. Arc: Luckiest Man Alive by Hyde77 (RWBY, Naruto (Anime & Manga), more)
17. Tensura: A Different Beginning by RandomJewels (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse)
18. Lord of Octagram - Tensura/That Time I Got Reincarnated as a Slime x Mha/Bnha by iride_akatsuki (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga))
19. Children of Tempest by Willsteredge (転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse)
20. That Time Harry Got Reincarnated as a Slime by blazeninja0 (Harry Potter - J. K. Rowling, 転生したらスライムだった件 - 伏瀬 | Tensei Shitara Slime Datta Ken | That Time I Got Reincarnated as a Slime - Fuse, more)