Well second light novel after TBATE , and geniully good novel. What I like the most is the fights , fights are portrayed very well no fucking heavy dialogue exchange just trying to use tools at your disposal to fullest. I mean first nightmare just shows you how sunny fights. But  We don't know about world very much and we don't know about side characters that well . Like Nephis I can't relate to her very much even now even though she is literal mc, I can relate to Aiko better than nephis lol, while the story is just to focused on what sunny does and we have little to none info about other characters and enemies , therefore even if he does something oblivious it seems he outsmarted every one like come on. And now throughout the forgotten shore arc he was portrayed as Master of deception but he didn't even fool any one except caster . And nephis says she learns deception from him lol, the most deceptive thing he did was to hid his true name and failed to perform that too. But that's all the flaw of novel according to me. Everything else is peak. Especially Antarctica Arc and godgrave arc