Kashii Yutaka

Etou Shougo is a university student sharing an apartment with his male childhood friend Yoshizawa Natsuki. When Natsuki leaves to take part in a clinical trial Shougo didn't know he would be coming back as a girl! It looks like Natsuki won't turn back into a guy for a whole year. Rather than worrying about it pointlessly, why not have some fun with it instead?

A trilogy of three unrelated one shots by Kashii Yutaka: GhoStop! Guracchi (Glass x Change) Utahime.net

Minami-kun spots a poster recruiting new members for the Magical Girl Club. Thinking "Cosplay cuties woohoo!" he decides to join… What the hell!? It's not cosplay, we actually become magical girls?? A slice of life love-comedy revolving around magical girls and slippery slopes.

I intended to become the world's strongest "man", but I ended up becoming the world's strongest "woman"...?! The adventurer, Lydel, wanted the sacred stone, "Baetyl's Eye", to make him the strongest "man" in the world. The result? Lydel became strongest, but turned into a girl at the same time. In order for her to return to being a male, Lydel embarks on an adventure to find a new sacred stone, but...?