The series seems to be completed:
http://www.dlsite.com/books/fsr/=/keyword_work_name/%E6%AF%8D%E5%AD%90%E3%81%AE%E3%81%99%E3%81%99%E3%82%81+SRI0000010552/from/work.series
This above link has the whole series and the 3 collections.
But i cant find any torrents/zips etc for Vols 2+3 (can't read japanese).
The series seems to be completed: http://www.dlsite.com/books/fsr/=/keyword_work_name/%E6%AF%8D%E5%AD%90%E3%81%AE%E3%81%99%E3%81%99%E3%82%81+SRI0000010552/from/work.series This above link has the whole series and the 3 collections. But i cant find any torrents/zips etc for Vols 2+3 (can't read japanese).