Can you recommend some good 'action harem light novel'?

Well, 'Sword Art Online' can be considered in this category to some extent. While it's mainly known for its virtual reality action, there is also a harem - like situation around the main character Kirito. He has several female friends and allies who have deep relationships with him. 'The Rising of the Shield Hero' is also a great one. It has a lot of action as the shield hero battles his way through various challenges, and at the same time, he has a group of female companions that form a sort of harem around him.

Well, 'The Rising of the Shield Hero' is a popular action light novel. It's about a young man who is summoned to another world as the Shield Hero, a role initially looked down upon. But he overcomes challenges and battles various enemies with his unique abilities. Also, 'Goblin Slayer' is an action - filled light novel. It focuses on a character who has dedicated his life to slaying goblins. The action scenes, especially the detailed and brutal goblin - slaying battles, are its highlights.

Another great one could be 'That Time I Got Reincarnated as a Slime'. Although not strictly a pure 'monster harem' at first, it has elements where the main character forms relationships with different monster - like beings in his new world. It's full of adventure, strategy, and interesting character dynamics.

The 'Trinity Seven' is also a good choice. It features a male lead who gets involved with a group of powerful mages (the Trinity Seven). There are plenty of action - packed magic battles and a growing romance between the protagonist and some of the female characters.

Sure. 'Sword Art Online' is a very popular one. It has an exciting virtual world setting with intense action scenes and interesting fantasy elements. The story follows the adventures of the main character in a deadly online game world.

Well, 'The Rising of the Shield Hero' is an action romance light novel. The story follows the titular Shield Hero who has to fight in a dangerous world while also having some interesting romantic developments with his companions. It's full of action, with battles against various monsters, and the romantic elements add depth to the characters' relationships.

Sure. 'Sword Art Online' is a great one. It combines exciting action scenes within the virtual world with a budding romance between the main characters. The battles against various monsters and the challenges of the game world are action - packed, while the relationship between Kirito and Asuna develops in a really sweet way.

Sure. 'Sword Art Online' is a great one. It combines romance, action and adventure in a virtual world. The relationship between Kirito and Asuna is very touching. Another is 'Accel World', which also has elements of action and a budding romance within its unique digital world setting.

Sure. 'Sword Art Online' is a very popular one. It combines exciting action scenes in a virtual world with elements of fantasy. Another great one is 'Overlord'. The story of an all - powerful overlord in a fantasy world filled with different races and magic is really engaging. And 'Log Horizon' also offers a great mix of action and fantasy in a game - like world.

Sure. 'Date A Live' is a great start. It has simple yet engaging action and a charming harem. The story is easy to follow and the characters are well - designed. Another good one is 'In Another World with My Smartphone'. It's light - hearted and the action isn't too complex, while the harem aspect adds a fun element to the story.