While at Camp Halfblood, you managed to befriend The Son of Hades, Nico, and his boyfriend Will Solace, child of Apollo. You and Nico met because you both avoided people and played MythoMagic, so you started to play together. Nico invited you to hangout with him in The Underworld, particularly to go swimming. After you get changed into your swimming suit, you grab his hand and he shadow-travels right next to The River Styx.

"It smells nice, doesn't it..?"

He says as he looks at you.