One idea for the plot is that Naruto discovers that the person is homesick. He then uses a lemon as a symbol of home. He could say that lemons are common in their village and that they represent the familiar and comforting things. He might then plan a small 'home - like' event with the lemon as the centerpiece, like making lemon - based snacks that are popular in their village to cheer the person up.
One possible scenario could be after Naruto loses a difficult battle. Hinata might find him sitting alone, looking dejected. She could sit beside him and start by saying how she saw his amazing efforts during the fight. Then she might share some of her own insecurities and how Naruto's determination has always inspired her. This would remind Naruto of his own importance and boost his spirits.
Hinata's shy yet determined nature makes her effective. Her love for Naruto is pure and deep. In fanfics, when she tries to cheer him up, he can sense her genuineness. For example, she might blush while telling him how great he is, which shows her vulnerability and makes her words more impactful.
Well, in such a fanfic, Naruto might use his positive attitude. For example, he could share some of his ninja training stories that are full of funny mishaps. The 'lemon' could be a lemonade stand that he sets up to cheer the person. Maybe he tells the person how he once made a huge mess trying to make lemonade for his friends but still had a great time.
There are also fanfics where Naruto cheers up a young genin who is feeling down because they failed a mission. Naruto shares his own experiences of failure and how he learned from them. He encourages the young ninja to keep trying and not give up, showing that setbacks are just part of the journey to becoming a great ninja.
One way to write a cheering up scenario in a Naruto fanfiction is to have his friends come together. For example, Sasuke could return after a long time and they have a friendly spar. During the spar, they exchange words of mutual respect and understanding, which could cheer Naruto up as it shows the bond between them is still strong.
One possible scenario could be that Sakura is feeling down because she failed a difficult medical ninjutsu exam. Naruto, being the good friend he is, takes her out for her favorite ramen and tells her stories of his own numerous failures and how he never gave up. This cheers her up as she realizes that failure is just a stepping stone to success.
Naruto's optimistic personality is a big factor. His ability to always see the bright side of things can rub off on Sakura. For example, if Sakura is worried about a mission, Naruto will be all like 'Don't worry, Sakura -chan! We've faced tougher things and we always come out on top!'. His positive outlook makes Sakura believe that things will be okay.
Naruto might be overjoyed. He's always been someone who values friendship and love, and Hinata's confession could be like a dream come true for him. He could immediately accept her love and start planning a future together.
There could be a fanfic with this title, but the use of 'lemon' makes it a bit suspect. In the world of fanfiction, there are so many different takes on Naruto and Hinata's relationship. But if it's a 'lemon' fanfic, it's likely to contain adult - themed content. So, if you're looking for proper, non - inappropriate fanfics about them, you should look for ones that are rated for general audiences.