This book contains more theories and explores spells from a scientific theoretical perspective. The angle of approach is novel, and the writing style is rigorous but not obscure.
There are two plots for the second time and the third time, which have the feel of a shounen manga. The main plot is an original shounen manga, but it is combined with many other daily (?) Manga.
The soul swapping plot mainly follows the emotional line, and the competitive element is not the main line. The boys support each other's growth, and their emotions develop naturally.
A kind of imagination of Sawamura's third grade, with laughter and tears, and a good grasp of the characters. The comment section shouted "Doujin World Temple Dad". There is a follow-up on a certain blog and it's finished.
Strength Supremacy Classroom + Akaashi's Story. The plot is good and the characters are good, but the updates and plot progress are slow and the reading feels a bit obscure.
It's both sadistic and sweet, the plot and emotions are pretty good, and the development is a bit miraculous. Among many HPSS novels, this one is considered quite satisfactory.