YÅ« becomes curious about a mysterious blue ramen that Koizumi was eating. ShÅ« invites YÅ« to a conveyor belt sushi restaurant where they spot Koizumi enjoying one of its ramen dishes, prompting them to order some themselves. Later, Jun invites everyone to a ChÅ«ka restaurant in Kagurazaka to help her eat a massive gyÅza her mother had reserved, with Koizumi ordering countless ramen dishes on top of it.