Responses
There is a dj titled Ring that takes place after the events of Kizuna. Unfortunately, I've never been able to find it translated in English. The closest I've come is finding a version in Russion. If you understand Russian or know someone who does, let me know.
http://mintmanga.com/kizuna_dj___gun___heaven_ring/vol1/1?mature=1#
ヾ(☆▽☆)they should do a squeal al about Roy and Jack with them on missions and ofcours a romantic development