Happy New year, It's review time.

Mahiro is a shut in neet, until his scientist younger sister slips him a drug that transforms him into a middle school girl, forced to go back to school and adapt as a girl, Mahiro makes new friends and starts to really appreciate her new life.
Questionable motives at the beginning aside, this series is very careful with how it depicts the gender bender trope, it helps that Mahiro has a level head on her shoulders and apart from legitimate lack of knowledge of female biology never abuses the fact that her mind still retains memories and personality from her former male self, meaning Mahiro has no lustful desires in her to take advantage of her new friends, even the one girl she does kinda crush on, it's the most fascinating take on the gender bender formula since Ranma 1/2, and it's wholesome take is more welcoming than it's more mature cousins.
Not keen on a dub as there is some discourse over the translation which we've come to expect when tackling the subject of Gender Bending.
Final Verdict: A wholesome take on the gender bender formula with a competent lead who is an absolute god send for anyone who struggles with gender dysphoria.