Well, kanji is vital. In light novels, it can enhance the aesthetic appeal. Readers who are familiar with kanji can quickly grasp the intended meaning. Moreover, kanji is often used for names of characters, places, and important items in the story. Without kanji, it would be difficult to create unique and memorable names, and the overall feel of the light novel would be less distinct.
There are several. Kanji for directions like 東 (higashi, 'east'), 西 (nishi, 'west'), 南 (minami,'south') and 北 (kita, 'north') can be used when describing a place or a journey. Kanji for numbers are also common. For example, 一 (ichi, 'one'), 二 (ni, 'two') etc. Also, kanji for colors such as 赤 (aka,'red') and 青 (ao, 'blue') are often found in light novels to describe characters' appearances or the scenery.
Not always. Many manga have furigana (small hiragana or katakana above kanji) to help with pronunciation and understanding. Also, some simple manga are written mostly in hiragana and katakana.
Yes. Japanese light novels typically utilize Kanji, along with Hiragana and Katakana, to convey the story and express ideas. The usage of Kanji helps provide more complex and specific meanings.
Definitely. Japanese manga frequently utilize kanji as they are an essential component of the language. They enhance the reading experience and contribute to the overall cultural and linguistic context of the manga.
It depends on how the authors interpret the relationship between Kanji and Souji. It could feature their friendship, with adventures they go on together and how they support each other. Maybe it shows their rivalry, with each trying to outdo the other in certain aspects.