I guess bandai is more protective of the IPs of the suits than the IPs of the characters.So, this is Gundam but without Gundam?
A fun little first chapter! It'll be interesting to see how they translate g witches quirks into a school setting going forward. Speaking of witches, I presume that Mio throwing a bucket of water on that dude is meant to be a reference to Dorothy melting the Wicked Witch. Also the cute detail of Suletta and Miorine first meeting by the sea similar to how Ferdinand and Miranda do in The Tempest.