Reading through this again, I can definitely see it's flaws.
It progressed too quickly, they learned about the connection between worlds too fast.
They should of had a couple more trips back and forth, slowly learning something new everytime.
They also got strong too quickly.
The power ups were fine, but they happened too fast so we didn't really get to appreciate the new moves enough before Ageha got more.
Dragon bois psi, I imagine his abilities were gonna end up being to fully realize a psi dragon or something.
Glasses girls abilities could have evolved more into creative mental attacks.
Oboro.... interesting but not explored enough
Kirisaki was cool, tho we only saw him really fight once.
Dragon boi and Oboro were wasted, first trip into Psyren after training and they both get biffed and disappear from the story till the end.
This is a good series, interesting plot, cool powers, good characters, but it just wasnt explored enough.
The pacing was too fast, author shouldve slowed it down to really explore the world and its characters more.
The author gave us enough to understand, but not enough to really get invested in.
I suppose thats why it got cancelled.
Total shame, this could have been a masterpiece.