Not only a second volume but also a sequel called Pink Heart Jam Beat, both have official English releases which is why scan groups drop them.
╥﹏╥
Just to clarify, the series had seperate publishing’s, one as a per chapter run in a magazine (which is the 10 chapter scanlation already on here), and the other is a 2 volume paperback release (which has 5 chapters plus specials each). So you’ve already read both volumes, and the sequel is 5 chapters yet to be released in English, which Jujucat scans will upload when it’s available.
heard there's a vol 2 of pink heart jam. but there's no eng translation