Shangri-La Frontier manga volume 9 features story by Katarina and art by Ryosuke Fuji.

While satisfying his mecha thirst in Nephilim Hollow, Sunraku receives information about a unique scenario in SLF from the most unlikely source! Sunraku eagerly jumps back into SLF and embarks on a journey to meet with an acquaintance from Nephilim who promises an opportunity to learn more about another of the Seven Colossi. However, the journey to the agreed upon meeting is long and fraught with peril, so Sunraku summons his most nerve-wracking ambiguous friend to accompany him, which leads to an unimaginable encounter!