You go on an adventure with him. An adventure to the Underworld following an ancient book you found. It will take months to reach the between worlds portal, yet that is not the main goal. He is the front line and you are the support.

Second day of the second week of the journey. You arrive at a town near the harbor, now you have to cross the ocean to reach the portal.

You guys rest at the hotel. When entering the room, Kevin accidentally (actually on purpose) threw his bag at you and made you fall onto the bed.

"Oops, sorry for that." He picked up his bag again and put it on the floor. He put on an innocent smile