Kakashi could also be a common character. He is Iruka's colleague and they both play important roles in Naruto's life. In time travel scenarios, Kakashi might be involved in helping Iruka adjust to the time - shifted situation or they could work together on a mission that is affected by Iruka's time travel.
Well, in the fanfiction, Iruka may be protective by constantly checking on Naruto's well - being. He could ensure Naruto has enough to eat, is getting proper training, and is not being bullied by other villagers. He might also be protective in the sense that he gives Naruto extra attention and guidance in his ninja training, more so than he would for other students.
Well, in Sailor Moon, Usagi is a central character. Umino is also an important part of the Sailor Moon universe. When it comes to fanfiction, the addition of 'lemon' might be a bit tricky as it could refer to a genre that often contains inappropriate content in the fanfiction world. But if we consider it in a more general sense, perhaps in some fanfictions, 'lemon' could be used symbolically. For example, it could represent something fresh and tangy in a story about Usagi's adventures in Umino's world, like a new situation or feeling that adds a different flavor to the story.
One scenario could be when some villagers start to be mean to Naruto. Iruka steps in and scolds them, telling them Naruto is just a kid. Another could be during a training exercise that gets a bit too dangerous for Naruto, and Iruka quickly intervenes.
It also improves Naruto's skills a great deal. He becomes better at combat and using his ninja techniques. For example, his Rasengan might be more powerful or more easily controllable after Iruka's training. Moreover, Naruto's confidence grows under Iruka's guidance. He no longer doubts himself as much and is more willing to take on challenges.
Physically, Iruka takes care of Naruto's symptoms. If Naruto has a cough, Iruka might make him herbal tea to soothe his throat. If Naruto has a fever, he uses cold compresses to bring the temperature down. He monitors Naruto's condition closely and adjusts his care accordingly, making sure Naruto is on the road to recovery as quickly as possible.
At first, it might start with Iruka showing simple kindness to Naruto, like making sure he has enough to eat. As time goes on, Naruto starts to see Iruka as a father figure. He looks up to Iruka and wants to make him proud.
Umino's role with the 'lemon' element in Sailor Moon and Usagi fanfiction could be that of a catalyst. He could introduce a lemon - scented object that has some hidden power. This object then draws Usagi into a new adventure. Umino might be the one who initially finds this object and then shows it to Usagi, starting the chain of events in the fanfiction.
Initially, Naruto might be a bit hesitant to fully embrace this new family situation. But Iruka's kindness and Anko's enthusiasm would gradually break down his walls. Iruka would continue to be Naruto's academic and moral guide, as he always has been. Anko would introduce Naruto to a more carefree and adventurous side of life. They would have family outings, training sessions together. As Naruto grows, he would start to understand the value of having them in his life, and they would be proud of his every achievement, forging a deep and loving bond.