UselessAcc
I love this so much, it certainly didn't feel like 15 chapters only and I enjoyed every paragraph of it, I'm excitedly waiting for new chapters! As for the power boost, I like it how the progression is natural and consistent; maybe having him accumulating enough mana through time to use more skills and/or in a wider range, he's the original shadow monarch, he's already peak expert and only needs a more matured body. So I'm thinking of having enough mana to use the Shadow Domain to change the color from blue to purple.