Can you recommend some good 'lust system light novel'?

Well, generally, a 'lust system light novel' often has a unique system at its core. This system usually dictates how characters gain power, level up or interact with the world. For example, it could be a system where a character's 'lust' level affects their abilities in combat or their social standing.

Sure. 'Sword Art Online' is a well - known level system light novel. It has an exciting story where players are trapped in a virtual game world and have to progress through levels to survive. Another one is 'Overlord'. The protagonist is transferred to a game world as his in - game character, a powerful undead lord, and there is a complex level and power system in it.

Well, 'My Next Life as a Villainess: All Routes Lead to Doom!' can also be considered in a way. The main character has to navigate through a world with certain systems in place that can be seen as related to the ntr concept, especially when it comes to relationships and how they develop or are disrupted.

I'm not really familiar with a specific 'heavy soverign system light novel'. But you can try searching on some popular light novel platforms like NovelUpdates. They usually have a wide range of novels and might have what you're looking for.

Sure. 'My Dragon System' light novels often feature unique dragon - related concepts. One popular one might be the one with a protagonist who discovers his dragon system abilities and uses them to save his world. It usually has elements of adventure, magic, and character growth.

Sure. 'Re:Zero − Starting Life in Another World' can be considered in a way. While it's not a typical 'level up system' in the traditional gaming sense, the main character, Subaru, does grow and develop in power and abilities over time as he faces repeated challenges in the fantasy world he's transported to. Another option is 'That Time I Got Reincarnated as a Slime'. Rimuru Tempest, the slime protagonist, evolves and levels up in a very unique and interesting way as he builds his own monster nation.

A good 'growth system light novel' is 'That Time I Got Reincarnated as a Slime'. The titular slime character starts with very basic abilities but through various encounters and experiences, grows into a powerful being. 'The Rising of the Shield Hero' is another one. The shield hero has to grow in power, skills, and also in terms of how he is perceived by others in the story. These novels offer interesting takes on growth systems within their respective storylines.

One popular sex system light novel is 'Sword Art Online'. It has an interesting system within the virtual world that affects the characters' abilities and relationships, though the sex system aspect is more in the background of the complex story of survival and adventure in a virtual realm.

Sure. 'Overlord' has vampire - like elements in its complex world - building. Another one is 'Strike the Blood', which focuses on a vampire protagonist and his various adventures. And 'Dance in the Vampire Bund' also offers an interesting take on the vampire system in a light novel format.

One popular mercenary system light novel is 'Solo Leveling'. It has a unique take on the concept where the protagonist grows from being a weak hunter to an extremely powerful force. The mercenary system in it adds an interesting layer to the story as he takes on various quests and battles.