I watched the episode subbed. Raika explained he decided to get the ability to Cross Fuse because of Asteroids appearing in real life back in his country. He still insists he does not want to rely on this ability. In Stream, Slur sends Asteroids to normal people and they can make the Asteroids appear in real life. Cross Fusion is usually necessary to combat these, so hence the reason.
I rewatched the original series pre stream and maybe in his mind he thinks that because the threats are coming from their own planet that he didn't want to rely surely on cross fusion.
So according to the series he was first introduced in. He didn't want to rely on cross-fusion since the enemies in this series weren't from earth he saw the need to cross fusion.
you can see at 0:07 the fusion chips are based on mega stones and at 0:14 the pet is based on the mega ring so there you have it mega evolution is based on cross fusion
1:09 This ability, Laika NEVER use it ever again after this episode, I watched Stream, Beast, and Beast+, never. 2:01 Also, combine attack, it never happens after this ever again, again lol
he uses the invisibility again in the episode with all the asteroid navis inside a mining machine with its own moving dimensional area. he uses it to go up a ladder undetected.
why do i keep losing my emotions? i watched this to try to bring back my happiness. i only felt blank emptiness where happiness once was. i want Raika to make me happy again. i have only hatred and sadness left. im not even able to fake happiness anymore to make others happy
