According to Japanese Red Cross Society, blood donors who donate 400ml of blood at Comiket 81 and other blood donation sites in Tokyo will be rewarded with posters of five game companies including TYPE-MOON
. The collaboration campaign will be held from December 29th - 31st at Comiket 81 and January 2nd - 31st at the donation centers in Tokyo.
List of the five game developers
Source: Japanese Red Cross
, Comiket 81 official twitter