It was a recollection, or something like that, of several series in conmemoration of GA Bunko's 15th anniversary. Here it is available to read for free. The SS is in page 1893.

https://bookwalker.jp/de21ea4311-6f90-4f32-9416-ad6be684b561/

If what you wanted was a translation I don't know of any fan translation in english, neither is their distribution allowed in the wiki.

Np. thank you.

I still feel in my mind that Ryuu will join with Bell’s Familia before the series ends.