Perhaps Thor lands in Konoha during a time of great crisis. The village is under attack by a powerful and unknown force. Thor decides to help. He uses his hammer, Mjolnir, to fight off the attackers. In the process, he befriends some of the younger ninja who are in awe of his power. He also has to adapt to the different fighting styles and rules in Konoha.
One possible plot could be that Thor arrives in Konoha and is initially mistaken for a powerful new enemy. The shinobi of Konoha are on high alert. But as they soon realize he has no ill intent, Thor starts to learn about the chakra system. He might even share some of his Asgardian knowledge about magic and combat with the ninja. For example, he could teach them new ways of using their physical strength in battle.
Naruto would be a likely ally. Naruto is always open to making new friends and with his strong sense of justice, he would see Thor as someone who can help protect Konoha. Another potential ally could be Kakashi. Kakashi is a very experienced and intelligent ninja. He would be able to quickly assess Thor's abilities and find ways to work together effectively.
In such a fanfiction, Goku might be seen as a very powerful and strange visitor in Konoha. He could start by showing off his amazing strength and speed during a training session with the ninja. Maybe he'd accidentally break some training equipment and leave everyone in awe.
The kiss might lead to a change in Thor's relationship with other characters. If Thor has a love interest like Jane, the kiss with the Enchantress could create jealousy and conflict. It could also make Thor question his own feelings and loyalties. He might be drawn to the Enchantress' allure but also feel guilty about betraying his friends or his true love.
One possible plot idea could be that they are in the middle of a battle, and in a moment of victory and adrenaline, they share a passionate kiss. It could be a turning point in their relationship, from comrades in arms to something more romantic.
Well, perhaps Loki freezes Thor as part of a deal with an enemy. Thor is frozen and the enemy thinks they can now easily take over Asgard. But Loki has a hidden agenda. He freezes Thor not to harm him but to protect him from a more dangerous plot. Thor, while frozen, has visions or dreams that give him some new power or knowledge. When Loki finally unfreezes him, Thor is stronger and together they outwit the enemy and Loki's true loyalty is revealed to Thor, strengthening their bond.
One possible plot is that Sakura returns to Konoha to reunite with her friends. She has been away for a while and during that time, things have changed in the village. She has to readjust to the new Konoha while also dealing with her own personal growth and the relationships she left behind.
One possible plot is that there is a breach between the Naruto universe and the Hellsing universe. This causes chaos as demons from Hellsing start to invade Konoha. Naruto, being the hero, tries to figure out how to stop them. Alucard arrives, not entirely as an ally at first. But as they both realize the common threat, they join forces. Naruto learns about the different nature of the enemies from Alucard and adapts his ninja skills accordingly.
Perhaps the fanfiction could focus on Naruto's adjustment to the new environment in Konoha. He'd have to get used to the different training facilities, local customs among the ninja clans, and the overall layout of the village. For example, he might struggle at first to find his way around the various training grounds and meet - up spots for ninja teams. But as he explores, he discovers hidden gems in the village and forms closer bonds with the villagers.
It could also be a sparring session gone wrong. Naruto might be training with the Konoha 12, but his new and powerful techniques are too intense. This causes the others to feel threatened and they end up in a full - on fight. Naruto would then have to control his power and show his friends that he doesn't mean to harm them.
Well, it could be about Naruto being wrongly accused and turning against Konoha. Maybe some false evidence is planted against him, making the villagers see him as a threat. So he decides to oppose Konoha to clear his name.