Well, it might have unique characters. Maybe the storylines are centered around the concept of a guy becoming a twintail, which can lead to some really interesting and comical situations.
The light novel might have engaging characters. They could be well - developed with distinct personalities. For example, the protagonist's journey of becoming a twintail might involve interacting with other characters who either support or oppose this transformation, creating various story arcs.
Well, from what I know, identity is a big theme. The protagonist's change to having twintails is not just a physical change but also affects their sense of identity. Also, the theme of acceptance might be there. Accepting this new form and the consequences that come with it in the story world. And there's probably a theme of humor as well, given the rather unique concept of the light novel.
One similar light novel could be 'KonoSuba: God's Blessing on this Wonderful World!'. It also has a unique and comical story with interesting characters in a fantasy setting. Another option is 'Overlord'. It shares the aspect of having a protagonist in a different kind of world with their own special abilities and circumstances.
I'm not sure specifically as I haven't read it. It could be about a journey towards happiness, with characters experiencing various events that lead them to find their own form of happiness.
I'm sorry, I haven't read this light novel specifically, so I can't give you the exact plot. But generally, light novels often involve themes like adventure, self - discovery, and relationships.
I'm not sure specifically as I haven't read this 'otoge ni torippu shita ore web novel'. It could be about a character's journey in a virtual world or some kind of adventure related to a game or an alternate reality.
I'm sorry, but without really knowing the content of 'kondo koso shiawase ni narimasu light novel', it's difficult to recommend similar ones. However, some popular light novels with themes of self - discovery and achieving a positive state like 'My Youth Romantic Comedy Is Wrong, As I Expected' could potentially have some similarities in terms of character growth.