I'm not sure if there is a specific 'haru x makoto sick fanfic' available. You could try searching on popular fanfic websites like Archive of Our Own or FanFiction.net.
One idea could be that Haru gets sick and Makoto takes care of him. Makoto could make him warm soup, bring him medicine, and stay by his side to keep him company. He might also read to Haru to pass the time while he's recovering.
One possible plot could be that Makoto gets sick and Haru takes care of him. Haru, who is usually reserved, shows his deep concern and affection for Makoto through his actions like making soup and staying by his side.
For Makoto, when Haru is sick, he would be very gentle and nurturing. His reactions would be full of concern, like constantly checking Haru's temperature and asking how he feels. He would use a soft voice and have a worried look on his face.
Friendship is a very common theme. Writers often explore how the deep bond between Rin, Haru, and Makoto affects their lives. For example, they might write about how they support each other through tough times in school or in their swimming careers.
I'm not sure specifically about lemon fanfiction involving them as it often goes against the general family - friendly nature of the original work. However, you can try searching on some fanfiction platforms and look for well - written non - inappropriate stories about their relationships.
Swimming is also a big theme. Given that they are all swimmers, many stories will involve them training, competing, or having some kind of revelation related to their swimming careers. For instance, a story could be about how Rin's new training technique inspires Haru and Makoto to improve their own skills.
Misunderstanding is also quite common. Maybe Haru misinterprets Makoto's actions leading to a fight, but then they clear it up later. Friendship is often a big theme as well. Even during the fight, their underlying friendship shows through, like they hold back from really hurting each other. This is often explored in a more detailed way in longer fanfictions where there's more room for character development.
The theme of self - discovery is also quite prevalent. As they navigate their new relationship in the yaoi context, both Haru and Makoto often go through a journey of understanding their own feelings and identities. For example, in many fanfictions, Haru realizes his deeper feelings for Makoto while trying to understand his own approach to love. This is often intertwined with the beautiful poolside settings that are characteristic of their story. The water and the swimming aspect often symbolize the fluidity of their relationship.
In 'makoto x haru lemon fanfiction', one might expect themes related to their personal growth influenced by each other. Their relationship could be depicted as a source of strength for both of them. It could also touch on themes of loyalty and trust, as they support each other through various situations. Additionally, the fanfiction might explore their different personalities and how they complement each other in different scenarios.