In the manga, Tanjiro and Kanao don't end up getting married. The story focuses more on their battles and character development rather than romantic pairings.
The Logans show a range of emotions. Some are angry, some are sad, and they all try to figure out how to deal with the situation presented by TJ's story.
His family would be extremely worried. Hinata, as his wife, would probably be in a state of panic. She might start searching everywhere for him, using all her skills and resources. His children would be confused and sad, constantly asking where their father is. And the rest of his family, like his friends who are like family, would also be on high alert and start looking for him right away.
Star's friends would likely be a mix of helpful and confused. Since Star is from another dimension, her friends might not be entirely sure how to handle it. But overall, they would probably try their best to make her feel normal. For example, they could plan a girls' night in for Star and the female friends, with movies, junk food, and lots of girl talk.
They might be overjoyed. Since Sarada is part of their family, they would likely welcome her with open arms and big smiles. They could be very proud of how far she has come in her ninja training.
The family was extremely frightened. At first, they might have thought it was just their imagination or some normal, explainable things. But as the strange occurrences continued and intensified, they became desperate. They started looking for help, reaching out to those who might understand the paranormal. Some family members were so scared that they didn't want to be alone in the house at all. They were constantly on edge, not knowing what would happen next.
If RWBY were to react to Spy x Family fanfiction, they would bring their own perspectives. Ruby, with her innocent and curious nature, would likely be intrigued by Anya's telepathic abilities. Weiss, being more refined, might analyze the political and social aspects of the Spy x Family world. Blake, having experienced secrecy herself, would empathize with the characters hiding their true identities. Yang would enjoy the comical moments and the action - packed sequences, like when Loid does his spy stunts.