Novels like ULTIMATE PROTECTOR: HEIR OF SANTANIA.

All share Portal Fantasy / Isekai and LitRPG

Cloud of Smoke: A LitRPG Progression Fantasy

4.21

Also Mystery and Supernatural

Dungeon Tamer: The Lumberjack's Law

3.88

Also Monster Evolution and High Fantasy

Reincarnated as a Beastman: I Dumped All My Stats Into Luck!

3.68

Also Progression and Male Lead

Sins of the Forefathers: A LitRPG Fantasy Isekai

4.33

Also Mystery and High Fantasy

Divine Necromancer

4.39

Also Mystery and High Fantasy

Journey to Veresavir

4.60

Also Magic and Progression

Overpowered Murderhobo

4.55

Also High Fantasy and Progression

First Date: Oblivion

4.46

Also High Fantasy and Progression

Skill Eater: A LitRPG Adventure

4.32

Also High Fantasy and Progression

The Archmage's Second Life as an Introvert

4.31

Also High Fantasy and Progression

Stella Draconum

4.43

Also High Fantasy and Progression

Nightmare Realm Summoner

4.50

Also Mystery and Supernatural