You might like 'Horimiya'. It shares similarities with Shikimori in terms of character dynamics and the light-hearted tone. Both show the growth and interactions of the main characters in a school setting.
The ending of the Shikimori manga is quite satisfying. The main characters reach a conclusion that feels right for their journey, and loose ends are neatly tied up.
Some of the side characters like Shikimori's friends might also gain popularity in the fanfiction. If the fanfiction gives them more depth and interesting storylines, readers could really get attached to them. For example, a friend who has a hidden talent or a mysterious past.
Another plot could be a time - travel scenario where Shikimori goes back in time and has to deal with her past self and the challenges that come with it. This could add a whole new layer of complexity to her character.
The unique characters make it popular. Shikimori herself is a very interesting character with her cool and cute sides. Her relationship with her boyfriend is also quite charming, full of sweet and funny moments.
The story is about a relationship. Shikimori's boyfriend often gets into some small troubles, and Shikimori is there to save the day with her unexpected coolness. It also shows their daily life at school and with friends, filled with warm and humorous moments.
There were a few novels about the CEO's younger brother that he could recommend. Among them," The CEO's Brother Dotes On Me " was a modern romance novel about love and marriage. It was about the protagonist, Mo Xiaole, who accidentally got a CEO's brother who doted on her sister like her life. From then on, her life changed greatly. In addition," My President's Brother " was also a romantic story about a brother and sister relationship that was loved by the wealthy families in the modern city. The main character was Hua Xiaoyun. These novels could satisfy her interest in the subject of her brother, CEO Wen's brother.