My Puberty Syndrome from the Comics

[The passerby heroine + Harmono + the pig-headed boy + Miss Kaguya + the changing doll fall in love... Tentatively decided] Yu Hayata, who accidentally traveled to the world of comprehensive comics, thought that he would live a dull life without any talent. But he suffered from a strange disease called adolescent syndrome. From then on, the heroines, who obviously had no social skills, came over one by one.