Piper would use her charmspeak to try and soothe Percy's troubled mind. She'd also be very empathetic, listening to him without judgment. The rest of the Seven would also come together as a group. They'd create a safe space for Percy, where he could express his emotions freely, and they'd all work together to help him see that he is valued and loved.
They would likely be shocked and extremely worried. They might immediately try to stop Percy from doing it again and get him some help, like finding a healer or someone who can offer mental support.
The others in the seven, like Jason, would probably feel a sense of guilt for not noticing earlier. They would come together as a group to support Percy. Jason might offer his friendship and strength to Percy, telling him he doesn't have to face it alone anymore. They would also likely start to investigate who was responsible for the abuse.
They might be shocked at first. They probably didn't expect Percy, who is usually so strong and brave, to be dealing with depression.
Well, one possible plot development could be that the Seven initially don't believe it. They might think Percy is joking or just going through a rough patch. But as they start to notice his withdrawn behavior, his lack of care for his own safety during quests, they realize the seriousness. Then they would probably try to surround him with love and support, and maybe even seek help from the gods, like asking Aphrodite to restore his love for life or Apollo to heal his mental state.
They might be shocked at first. They could feel a sense of guilt for not noticing earlier. Maybe they immediately try to comfort Percy and offer their support, like giving him a safe place to stay and assuring him that he's not alone anymore.
He could be a bit shy. Since he also has feelings for Annabeth but was too nervous to make the first move. So when Annabeth asks him out, he blushes and stammers a bit, like, 'Uh, yeah, Annabeth. That sounds great.' And then he would be really happy inside, thinking about all the things they could do together on their date.
In this kind of fanfiction, the seven might react with shock. Percy has a complex past filled with battles and losses. They could become more empathetic towards him, or it might cause some friction as they re - evaluate their relationships with Percy.
The seven in this fanfiction are probably a set of characters who are central to the plot along with Percy. They could be his friends or allies in the world of demigods. Maybe they are characters like Annabeth, Jason, Piper, Leo, Hazel, Frank, and others who are on the same side as Percy in the fight against the forces of evil in their fictional world.
The Olympians' reactions would be quite diverse. Some might be angry that one of their heroes, a son of a major god like Percy, has been reduced to homelessness. Zeus could be one of those who is initially angry, thinking it's a sign of disorder in the world he rules. However, as they start to understand the reasons behind Percy's homelessness, they would probably soften. Hermes, being the messenger god, might be the first to actually go and talk to Percy, trying to find out exactly what he needs. And Aphrodite, with her soft heart for love and beauty, might be among the first to offer him a place to stay, perhaps in one of her many beautiful abodes.
The gods would likely be very interested and a bit apprehensive. Zeus, for example, would be worried about Percy's new power disrupting the order of things. Athena might try to use her wisdom to figure out how to control or guide Percy in using his void powers. Poseidon would be conflicted, proud of his son's power but also concerned about how it will affect Percy's future and his relationship with the other gods and demigods.