Yes, it is such a season. Mei-Shun means that there are a lot of 凶=kyo, the worst luck in the omikuji box at the nearest shrine. That might be because the priest would like to make more visitors happier in January: if they draw bad lots on New Year Day, and shrine maidens have to hand gloomy pieces of paper to them, following year would seem lugubrious for both of them.