First season episode 46 has a Male Gaze close-up of Majo Rika and Majo Ruka's breastplates when they're practicing their samba dance, complete with lots of Gainaxing. Probably counts as Fan Disservice, as both were witch frogs at that point. If you guessed 4Kids Entertainment cut this scene out in the English version, you're right.
Majo Rika getting drunk in an episode of the first season. 4Kids Entertainment tried to censor it by putting a "Sleeping Potion" text on the bottle, but that makes it even more obvious and she still behaves like a drunk person in the dub.
Ojamajo Doremi #
Reika Tamaki in the first Non-Serial Movie ends up wearing a sexy Playboy Bunny suit when the Witch Heart Flower messes with her wish. She was 10 years old in the movie.
Motto! Ojamajo Doremi
Motto! episode 10, full stop. In this infamous episode about puberty, Naomi feels embarrassed about her breasts growing. And there's also the part where Reika flaunts her chest and gets her bra snapped off by her own teacher (Miss Seki) during the health exam. However one can also argue that this episode was a case of Some Anvils Need to Be Dropped, as puberty isn't something that is usually taught to children, much less depicted in the realistic and frank manner that this episode does.
Despite that it was sung by a bunch of adults In-Universe, the insert song, "Namida no Broken Heart", has some racy sexual imagery in its lyrics about a summer fling...
A teary broken heart from last summer
Your figure... it's sexy
Even if you let me make love to your bare-naked body
You're so cool about it... I'm mesmerized
Did we also mention that Takurou Hagiwara, a 12-year-old boy, gets to cover the exact same song on the class 6-1 Image Song album?
Ojamajo Doremi Dokkan!
In Dokkan! episode 13, Onpu deliberately gropes Mutsumi's breast to show her that boys are uncomfortable with touching her body. Later, Mutsumi makes a rather suggestive remark about Hasebe encouraging her to wrestle.
Dokkan! episode 19 is full of this. Hazuki being a Covert Pervert? A little boy running onscreen with his genitals exposed? Hmmm.