Gray would be devastated. He might go into a state of deep depression, isolating himself from the rest of the Fairy Tail guild. He would blame himself for not being able to protect her, especially if her death was related to her love for him. Gray would probably be filled with anger as well, and he would vow to take revenge on whoever was responsible for her death.
Their friends in Fairy Tail would likely be very excited. Erza, for example, would probably be super supportive and offer practical advice on things like baby - proofing a home. Natsu might be a bit clueless at first but would be really happy for them. Lucy would be thrilled and might start knitting baby clothes. Happy would be flying around them, chirping happily. Overall, their friends would form a great support system for Gray and Juvia during this time.
Juvia might become very sad and withdrawn. She could start to doubt herself and her worthiness of love. In some fanfictions, she might cry a lot and isolate herself from others in the guild, thinking that she has done something wrong to make Gray reject her.
One great Fairy Tail Juvia fanfiction is 'Juvia's Redemption'. It shows Juvia in a new light, dealing with her past and growing stronger. Another is 'Juvia's True Love' which focuses on her relationship with Gray in a really heart - warming way. And 'Juvia's Adventure' takes Juvia on an exciting journey outside of the main Fairy Tail plot.
One fanfiction that stands out is 'Juvia's Magic Evolution'. This story is all about Juvia's magic getting stronger and evolving in unexpected ways. It has some really cool battle scenes where Juvia shows off her new powers. Another good one is 'Juvia's Family Ties' which explores Juvia's past family life and how it impacts her present in Fairy Tail. It's a story full of emotions.
In many fanfictions where Gray confesses to Juvia, it's often a very emotional moment. It might happen after a big battle where they realize how much they mean to each other. Gray could finally admit his feelings that he has been suppressing for a long time. Maybe he sees Juvia in danger and that makes him realize he can't hide his love anymore.
One idea could be a story where Natsu and Juvia team up for a mission. They initially clash because of their different personalities, Natsu being hot - headed and Juvia being more reserved and love - stricken for Gray. But as the mission progresses, they start to understand and respect each other's strengths, and form a strong friendship. For example, Natsu could learn about Juvia's water magic and how she can use it in creative ways, and Juvia could be impressed by Natsu's determination and never - give - up attitude.
A really interesting fanfiction is 'Juvia, Natsu and the Lost Magic'. Here, Juvia and Natsu are on a quest to find a lost magic. Along the way, they encounter many challenges. Juvia's water - based magic and Natsu's fire magic create some really cool and unique battle scenes. The story also has a sub - plot about their friendship growing stronger, and how they come to rely on each other in ways they never expected.
One possible fanfiction could involve Juvia initially being hesitant to date Lyon because of her feelings for Gray. But as she spends more time with Lyon, she discovers his own unique charm. For example, Lyon might take Juvia on a magical adventure through the Fairy Tail world, showing her places she's never seen before, which gradually makes her heart open up to him.
She might leave due to heartbreak. For example, if she felt that Gray didn't return her feelings in the way she hoped, she could decide to leave to get over him and start anew.