Shidou in the opening

Shidou in the opening ep 1-5 and ep 6, i knew that shidou was with them before i was confused why he was wearing blue in the opening

https://preview.redd.it/feuhmrsjexzd1.png?width=1920&format=png&auto=webp&s=48c39f446caefda088bf9a8dc3c25531110b8ab7

https://preview.redd.it/ugqm3rsjexzd1.png?width=1920&format=png&auto=webp&s=8fda94d1d4aad790130c69d9f11da1ce81ba48d1

https://preview.redd.it/j5c2zsqpexzd1.png?width=1918&format=png&auto=webp&s=25c93c9618563545d7c6863a77102896feecf34f

https://preview.redd.it/qzawlhmqexzd1.png?width=1920&format=png&auto=webp&s=702d352b770da100e0b84763417f1e4932054b85