Their relationship would likely become more intimate. With the knowledge of a baby on the way, Sai might become more tender towards Ino, and Ino would rely on Sai more for emotional support. They would have to communicate more about their future plans and how to raise the child.
Perhaps the OC is from another village on a diplomatic mission. Ino is assigned to show the OC around Konoha. At first, they have some misunderstandings due to their different village cultures, but as they get to know each other better, they realize they have a lot in common and fall in love.
In a fanfiction, their teamwork could be extraordinary. Ino could use her mind - transfer jutsu to share information with Naruto during a battle. Naruto, being the powerful ninja he is, could then act on that information quickly. For instance, if they are facing an enemy with hidden traps, Ino could transfer the knowledge of the trap locations to Naruto, and he could use his speed and strength to avoid them and attack the enemy from a safe position.
A lot of Ino Yamanaka fanfictions focus on her role in the Hidden Leaf Village. This includes her participation in village - wide events, her loyalty to the village, and how she helps in protecting it. Also, her rivalry - turned - friendship with Sakura is a popular theme that many fanfictions play around with.
I'm not sure specifically as 'forced lemon' fanfiction involves inappropriate and non - consensual themes which are not acceptable in a proper fanfiction context. It's better to focus on positive and consensual fan - created works related to Ino Yamanaka.
In a more comical fanfiction, Ino could be trying to give Naruto a makeover. Since Naruto is not exactly known for his fashion sense. She might enlist the help of Sakura and together they turn Naruto into a more stylish ninja. This could lead to all sorts of funny situations, like Naruto trying to fight in his new fancy clothes or scaring off enemies with his new look.
One idea could be a fanfic where Ino Yamanaka uses her mind - transfer jutsu in a completely new and unexpected way, like transferring her consciousness into an animal to gather intelligence for the Hidden Leaf. Another could be a story about her opening a flower shop that also serves as a front for a secret shinobi information exchange.
Naruto would be a fun character to pair with Ino. Naruto's positive attitude and his ability to befriend anyone could bring out a different side of Ino. They could be on a mission to rescue someone, and Naruto's strength and Ino's intelligence would make them a formidable team.
There are many out there. A particular fanfiction I remember has Ino taking on a mentoring role for the younger ninjas in the village. It's a great read as it shows her development from a young ninja to a more mature and responsible one. The story also has some really cool fight scenes and emotional moments between Ino and her friends.
I'm not sure specifically what 'ino sai lemon fanfic' is about as the name is rather ambiguous. It could potentially be a fan - created fictional work related to characters named Ino and Sai in some fictional universe, but without more context it's hard to say exactly.