hey fun math fact! if you do all combinations of the 6 enha members (combinations, so order doesn’t matter), and if you assume each person can have sex a maximum of 1 time per day, it would take them 31 days to get through all combinations (with groups of 2, 3, 4, 5, and 6). if you included heeseung, making it 7, it would take them 64 days to get through all combinations (groups of 2 to 7).
there might be a way to make it more efficient and condensed, but that was my first way of condensing it.

so in theory, if they decided to make it a new year’s resolution (committing to slightly less than one sex session per day, considering the days where they are excluded, like with groups of 5), every current member could get with each other (in every combination, including everyone x everyone) by the last day of january.
i feel bad excluding one member (when they do combinations of 5), so we could just say that, on the days where 1 member isn’t having sex, they’re doing selfcest (and a clone of themselves spawns for that one single day). which would increase the average to exactly one sex session per day, and no one would go a day without sex, and it would still take exactly 31 days.

and if you consider heeseung, it would take them just over 2 months. but, if they committed to more than 2 sex sessions per day (that’s assuming that, on the days where one member is excluded, they’re doing selfcest with a clone), they could bring that 64 down to 32. and if they squeeze the final 7 everyone x everyone into the last day (for some, increasing it to 3 sessions on that last day), they could do it in 31 days. which would also fit into the month of january.

lots of new year’s resolution potential