Artist's commentary
Your little sister.
I'll be selling two new books at the Winter Comic Market [Fuyu-komi].
After the last scene, these two has regained their memories.
Yotsuha-chan, now in high school, is shocked.
Where: first day (December 12th), East-1, A-14b
Circle name: TRICK&TREAT.
People who won't be there, please consider this: Melon Books (only available here): https://www.melonbooks.co.jp/detail/detail.php?product_id=197674