第 2 集: 長門回憶起在聖誕派對中協助拯救文學社的神秘少女。
2015年4月11日 播出
As the Christmas party gets underway, Nagato recalls earlier in the year when the Literature Club was in danger of bring shut down due to a lack of members. Whilst figuring out what to do, Nagato encountered a mysterious girl from Kouyouen Academy who dragged her into writing an alien message to Santa in the playground. Finding confidence in the girl's positive attitude, Nagato was able to ask Ryoko and Kyon to join the club. Back at the party, just as Nagato tries to work up the courage to confess to Kyon, but is interrupted at the last minute. The next day, Nagato and Kyon are surprised when the mysterious girl from before suddenly lands in front of them. (Source: Wikipedia)