Who is the Eldest Princess doing this for?

Well, one option could be to search on major online bookstores that offer a wide range of comics and manga. Another possibility is to check out libraries that have a collection of foreign-language comics. Also, keep an eye on comic conventions or events where vendors might have it available.

The theme might be about the importance of patience and empathy in the medical field.

Not much. Manga Rock is a platform for accessing manga, while Hataraku Saibo Black is a specific manga title. They don't have a direct, inherent connection.

She gained special powers and abilities after being bitten. Maybe something like enhanced strength or the ability to climb walls.

The Undertale Sans comic strip often showcases Sans' personality traits and his relationships with other characters. The plotlines can range from light-hearted moments to intense battles, and the art quality can vary depending on the artist's style.

It's simple. Just blend ripe mango and banana with some milk or yogurt and a bit of honey for sweetness.

Honestly, I have no clue. They seem like very disparate elements that might just be thrown together for some unique or mysterious purpose that's not immediately obvious.

You shouldn't search for this kind of comic. It's often against the law and not in line with moral standards. Try focusing on positive and legal forms of entertainment instead.

Maybe they had some sort of misunderstanding or it was just a bad moment for them. Not sure exactly why.

The two are worlds apart. Idolmaster is a popular and family-friendly entertainment property. Hugs Hentai Manga is adult-oriented and not related to the world of Idolmaster in any meaningful way. They belong to entirely different domains.