I don't understand your question
Sorry, is it included IN TWITTERING BIRDS?
It's all right. Counting the chapters, then chapters 19 and 20 will be included in Vol.4 of Saezuru, but Vol.4 isn't released in Japan yet. As for the English editions, we don't even know when Vol.3 will be released.
Thank You
does anyone know if ch.19 and 20 are in twittering birds?