Artist's commentary
異世界勇者ジーシャイン(仮)
It's tentative for now, but I came up with a name.
(https://twitter.com/isiyumi/status/1144596177171537921)
Displaced → Ten'i → XE → "Gzee", then 'docking' into a nice-sounding word ending with an 'n'. Kinda fits the meaning of a Warrior of "Light" too.
(https://twitter.com/isiyumi/status/1144596820623908864)
He's called Shine in his normal state. XE-Shine once he's gattai'd. combine-transformed
(https://twitter.com/isiyumi/status/1144597314914279424)
Partner role isn't played by a young boy, so there will definitely be some conflict.
(https://twitter.com/isiyumi/status/1144606744988962816)
Gasp—! On the side of the Demon Lord's Army... there is a shota prince...?
(https://twitter.com/isiyumi/status/1144610895395356673)
Additional commentary provided on preceding and subsequent tweets.