Well, that's hard to say. Kawaii is a subjective perception. It could be based on your expressions, style, or the way the artist portrays you in the comic.
Kawaii usually refers to cute and sweet characters. Here are some famous Kawaii characters:
1 Bunny Detective Agency's Bunny Girl (Bunny Detective Agency)
2. Little Burial
3 Pikachu
4. Boya Hancock (One Piece)
5 Snow Rabbit ("Full-time Hunter")
6. Takashi Natsume in Natsume's friend's tent (Natsume's friend's tent)
7 Amagasaki Ichigo (Death)
8 Hatsune Miku ("New Era Evangelion Warrior")
Athena of the Stardust Fighters (Stardust Fighter)
Super Dream (Super Dream)
Of course, this was only a part of the Kawaii cartoon characters.
There could be a fanfiction where Tsukushi and Tsukasa are expecting a child. It might explore how they prepare for the new arrival. For example, they could be shown shopping for baby clothes and setting up a nursery. The story could also delve into their emotions, like Tsukushi's excitement and Tsukasa's nervousness about becoming parents.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and there's a good chance you'll find some great anzai and tsukasa fanfics there.
Another theme can be personal growth. In many fanfics, both Tsukasa and Tsukushi might face difficulties that force them to grow and change. They support each other during this process, which is a great aspect of these stories. For example, Tsukasa might be shy at first but becomes more confident with Tsukushi's encouragement. Tsukushi, on the other hand, might learn to be more patient or understanding through their relationship.
Often, you'll see themes related to self - discovery. Tsukasa and Tsukushi might be on a journey to understand themselves better while being in the relationship. Also, there are fanfics that focus on the power dynamics between them, as they might have different social standings in the original story. This creates an interesting dynamic in the fan - created stories.
There's a fanfiction titled 'Tsukasa and the Mysterious Object'. In this story, Tsukasa stumbles upon a strange object and her curious nature leads her on an adventure. It's full of humor and the interactions between Tsukasa and the other characters are really well - written.
Love and relationship development are very common themes. Writers often explore how Tsukasa and Nasa's relationship evolves over time. Another theme could be adventure, where they go on various quests together and their relationship is tested and strengthened during these experiences.