More pics and a short report can be found at the link below.
Source: Animate Times
Animate Times has put up a form where you can a) wish Kiiyan a happy birthday and b) fill out a questionnaire on his roles and more. The birthday messages will be shared with him on his birthday, and the questionnaire results will be made public at a later date. You have until 22:00 JST on August 10th to leave your messages.