Reading this was like watching a car accident. I couldn't look away from the nightmare unfolding in front of my eyes. Let me be clear- I tend to like age-gap relationships when they are done tastefully. After the Rain is a great story, and I admit that The Garden of Words made me tear up. But this- this is just... no. Allow me to be clear, the main character is in 3rd grade, so we're talking about 8 or 9. her "love interest" is is school doctor his 20s. And the attraction is mutual. 1. Who hired this man? 2. Seriously, who let this man get a job at anelementary school.
And it gets worse. Emiri (the main character,) gets magical age-up pills, and then the story sexualizes this still mentally 8 year old girl by putting her in sexy outfits, all the while make it clear through her thoughts and actions she is very much a child.
Oh, and as if this abomination wasn't already horrific enough, incest happens, and her older brother tries to get into his sister's pants because he now finds her sexy.

In conclusion. I give this an "Oh sweet maker forgive me."/10
I have never wanted to stab my eyes out with a blunted spork more greatly than I did while reading this manga.