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.
The 'kokoro connect' in the 'kokoro connect michi random light novel' is likely to be a fundamental aspect that ties the story together. It could stand for the way the characters' hearts interact and communicate. This connection might be tested, strengthened, or changed throughout the course of the novel. It may also be related to the exploration of human nature, as the characters' kokoro connect can show how they respond to different situations, whether it's love, friendship, or adversity.
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.