these story beats feel so cliche, just so done-already. Nothing in here has triggered ANY amount of emotion for these characters - im not invested in this female lead character: i havent known her long enough to connect with her, and her tragic backstory rings hollow when everyone else in this world seems to be experiencing the same situation, vis a vis these demons.
Our mc hasnt struggled, or faced any complications while fighting these demons. Oh no! my shield broke! lucky for me, i chant for 30 seconds (in which the demon stands by doing nothing), and now I have an even stronger, even MORE impenetrable shield.
What use is having an op cheat, if your enemies power keeps rising? What use is your cheat if your power is always slightly stronger than your enemy?
The title of this manga is "The other world's magic is too far behind!". In our world, the naval strength of spain would not matter if I had an ICBM. Why would you use the magic equivalent of a handgun, when you have missile launchers. Why would you use your 5 second magic shield that will break instantly, when you can use your 30 second chant shield that is impossible to break through.
At this point, the manga is just going through the motions, hitting every beat that an isekai manga with an OP mc must hit.