Since these are special chapters do they actually fit anywhere canonically? Or are they separate from the main story chapters?
These comics are meant to be read as a continuation\behind the scenes of the episodes of the DVDs they're bundled with, therefore:
The HaruYuu (dvd volume 2) takes place sometime after episode 3a, in which we see Haruka join the meet committee to have a sports festival because Yuu wanted to be a cheerleader. (It's the episode where Mitsuki sees Haruka for the first time - or she doesn't, because her glasses were broken)
The KotoShizu (dvd volume 4) happens immediately after episode 7a, Kotone and Shizuku are back at Shizuku's after the swimming contest with Kotone's younger sister, when everyone got to know about Kotone's arranged marriage.
The KaeYuzu (dvd volume 6) happens right in the middle of episode 12a, during the graduation party for Mitsuki and Rina. Yuzu and Kaede are supposed to do impersonations of Mitsuki and Rina (they're even dressed for the part) but Kaede gets overwhelmed and Yuzu drags her to the other room, this comics happens, and in the anime we see the remaining of the scene.
ETA: the KotoShizu was translated on /u/ years ago, we decided to make our own version as well, for completion's sake.
last edited at Jan 29, 2017 4:37AM