Ever since he was a child, Uehara has yearned to become an entomologist despite his shyness in social situations. He devoted himself entirely to pursuing this ambition, but unfortunately, failed to achieve it. As a result, he was compelled to return to his hometown where his mother was indifferent to his plight. Whilst on his home island, Uehara coincided with numerous tourists who had come to witness an unusual celestial phenomenon. Soon after, Uehara encountered a peculiar insect that altered his physical appearance, including his reproductive organ. What will befall Uehara? And how will he manage to cope with the changes in his life?
