Responses

As far as I know there's only two volumes with this specific couple. There is a prequel to Kanawanu, but it's about a completely different couple. Kamisawa is only a side character in akai.
http://www.mangago.zone/read-manga/akai_ito_no_shikkou_yuuyo/
can someone tell me if kanawanu koi and tsunaida koi are the same manga and different volumes or is tsunaida a sequel?