Since I don't have first - hand knowledge of 'osananajimi ni najimitai light novel', it's hard to say precisely. However, 'osananajimi' means childhood friend and 'najimitai' can be translated as 'want to become familiar with'. So it may tell a story of a character who wants to become more intimate with their childhood friend, maybe through shared experiences, adventures or just spending more time together in their daily lives. There could be obstacles in the way, like misunderstandings or the intrusion of other characters.
Without having read the 'level 1 dakedo unique skill de saikyou desu novel', it's difficult to determine the main characters precisely. However, we can make some educated guesses. The protagonist is likely the one with the unique skill at level 1. There could be other characters such as rivals who are at higher levels but are eventually surpassed by the protagonist. There might also be mentors or friends who help the protagonist along the way, but again, this is all speculation without reading the actual novel.
The title 'level 1 dakedo unique skill de saikyou desu novel' gives the impression that it could be a story of an underdog. At level 1, one would assume the character is weak. But the unique skill changes the game. It could be a tale of their journey in a world where power levels matter a great deal. They might start off underestimated but gradually prove their might through their special skill, facing all kinds of situations, from battles to political intrigue perhaps, all while being the unexpected powerhouse because of their unique skill.
There are a few places you could search for 'osananajimi ni najimitai light novel'. Online, you can visit websites like Amazon. They often have a wide range of books, including imported light novels. You can also check out some second - hand bookstores, both online and physical ones. Sometimes you can find rare or hard - to - get light novels there. Additionally, some Japanese cultural stores may carry it if they have a section for literature.
I'm not entirely sure as the title is a bit complex. 'Kawaiikereba' might imply something related to cuteness. 'Hentai demo suki ni' seems rather odd as 'hentai' has inappropriate connotations in English, but if we consider it in a more general sense perhaps it's about having a liking despite certain elements. And 'light novel' is a type of Japanese novel, often with anime - like themes.
I'm not entirely sure specifically what 'suki suki visual novel' is about as there could be many different visual novels with this name. It might be a story about love and relationships, as'suki' means 'like' or 'love' in Japanese. Maybe it involves the experiences and emotions of the characters in a fictional world.
I'm not entirely sure as I haven't played it specifically. But generally, a visual novel often has a story with different characters and plotlines. It might be about relationships, adventures or personal growth of the characters within the story world.
I'm sorry I can't recommend similar light novels as I'm not familiar enough with 'kawaiikereba hentai demo suki ni light novel' to make accurate comparisons.