let's say akademi is just a high school and not some post-high school academy.
since daisaku is a second year, he would be 17. if the 1980s student council already graduated and came back to akademi like the 202X student council, daisaku would be 20.
this means that daisaku was either born in 1969 or 1972.
considering the year he was born in and the year (1989, and also, yk, japan), daisaku was probably misogynistic