He could be very empathetic. Naruto has been through a lot himself, and he would understand if Anko is drinking because of some past traumas or current stress. So he would listen to her if she starts to ramble and offer words of encouragement.
Naruto might be a bit shocked at first, seeing the usually tough Anko in a vulnerable, drunk state. He would probably try to help her, like getting her some water or finding a place for her to rest.
Naruto would probably be extremely hurt at first. He values friendship and loyalty a great deal, so Anko's betrayal would be a huge blow. But he wouldn't give up. He'd likely try to talk to Anko to find out why she did it, hoping to change her mind.
Anko might initially be very angry. She has a prideful nature, so being humiliated by Naruto would make her want to lash out. She could challenge Naruto to a rematch immediately, vowing to make him pay for making her look bad.
If Naruto does figure it out, he could be really flattered. He might see Anko in a whole new light. But he would also be a bit confused because he has always seen her more as a senior or a friend. He would probably try to handle the situation gently, not wanting to hurt her feelings.
Sakura might be initially shocked and a bit jealous, but she would probably come around to support Naruto as a friend. Kakashi would be more of a calm and collected figure, offering advice on how to handle the situation both as a ninja and as an expecting father. Sasuke, on the other hand, might be indifferent at first but later show some concern for Naruto's well - being in this new situation.
Naruto is often full of surprises. He might first act all nonchalant and say it's just a new thing he's trying. But when he sees Anko's serious face, he would start to panic a bit. He could try to make a joke out of it, like 'Hey, Anko - san, this fanfiction - drink is supposed to make me write better ninja stories!'. In the end, if Anko doesn't buy his story, he would probably just bow his head and admit it was a stupid idea.
Naruto would probably feel really bad about it afterwards. He's a kind - hearted character, so he might immediately try to apologize to Anko. Anko, on the other hand, would be very angry at first. She has a strong personality, so she might lash out at Naruto or storm off in a huff.
Naruto would likely be extremely hurt. He trusts his friends and comrades deeply, so Anko's betrayal would be a huge blow. At first, he'd probably be in disbelief and try to talk to Anko to find out why she did it.
The village would probably be quite surprised at first. Since Naruto is a very important figure in the village, his relationship with Anko and having a baby would be big news. Some might be excited as they would see it as a new hope for the future of the village. Others might be a bit cautious as they would wonder how the baby's powers and influence would shape the village's future.
Their relationship could start with respect. Naruto respects Anko's skills and her no - nonsense attitude. Anko, in turn, respects Naruto's determination. As they interact more, they start to share their past traumas. Naruto tells Anko about his loneliness as a child, and Anko opens up about her experiences. This mutual understanding leads to a deeper emotional connection and eventually love, which results in marriage.
At first, it might be rocky. Naruto's carefree nature could clash with Anko's more serious side. But as they start to communicate more, they find common ground in their love for the village. They would learn to respect each other's skills and abilities, and that would form the foundation of their relationship.