Tezuka Osamu ga Kieta?! 20 Seiki Saigo no Kaijiken

Tezuka Osamu who going to a 21 Century new year's party with all the charters he made. One thing leads to another and he ends up missing! It's up to his most popular charters to find out what happened to him and get him back safely before the rest of the guest show up
(Souce: Kuro Hazama (a Black Jack shrine))