If you're looking for manga similar to Midashitai Giya-san to Midarenai Tadamichi, you might like these titles.
Seto is a serious kid who leads a quiet High-school life, until he starts to get teased by resident Gal Anjo.
Renge Kurosaki is your regular run-of-the-mill gyaru, but she hides a secret that she shares only with our lowly protagonist Yashiro: she loves card games.
My ideal girlfriend is a "nerd-friendly, tanned, blonde, busty gal", I declared. My first girlfriend is Yuzuka Satomiya, who ticks all the right boxes and belongs to a different social class! Yuzuka, who I assumed would never be nice to me, turns out to be pure-hearted and charming; and I find myself falling for her more and more! She also really loves me so, so much! "Gals are kind to us nerds after all!"
My ideal girlfriend is a "nerd-friendly, tanned, blonde, busty gal", I declared. My first girlfriend is Yuzuka Satomiya, who ticks all the right boxes and belongs to a different social class! Yuzuka, who I assumed would never be nice to me, turns out to be pure-hearted and charming; and I find myself falling for her more and more! She also really loves me so, so much! "Gals are kind to us nerds after all!"
Shunpei, a loner high schooler, became a gyaru after saving the god of gyaru from drowning. Through his mother's connections, he was able to transfer to an all-girls school, but it was stuffed to the brim with gyarus! Every day is a sensory overload for Shunpei, who's never even talked to a girl, let alone a gyaru. It's the beginning of an introverted high school guy => gender-swapped gyaru comedy!