It could be the Slytherins. They are often portrayed as the antagonists in the Harry Potter series. Maybe they're jealous of Hermione's intelligence and want to embarrass her by forcing her under the desk.
The novels about the man serving the woman under the desk generally belonged to the romance, love, or urban emotional novels. The plot might describe a man working in a company to cater to the needs of the female lead, providing various services after work, and finally the relationship between the two gradually warmed up. This type of novel often involved topics such as workplace, love, marriage, family, etc. It had a certain practical significance and enlightenment.
I'm not sure specifically which ones are the most popular for this rather unusual scenario. Fanfiction varies greatly in popularity and availability. However, you can start by looking on major fanfiction platforms like Fanfiction.net or Archive of Our Own. Search for the exact phrase 'Harry Potter Forced Under the Desk' and browse through the results to find ones that seem interesting to you.
Perhaps there could be a stack of old, hand - written notes. These notes might contain his personal thoughts on magic, or his memories related to certain spells and potions. Snape is a very private person in the original stories, so these notes could be full of secrets. For example, they could be about his past relationships or his early experiments with magic that he doesn't want others to know about.
In this fanfiction, it could also be that Hermione is forced under the desk as part of a mystery. There could be some hidden secrets or clues under the desk that she needs to discover, but she's being forced to stay there against her will at first. As she investigates, she uncovers something that has far - reaching implications for the wizarding world.
It's possible to find a stack of papers. These could be ungraded assignments, old lesson plans, or notes from previous classes. There might also be a small wastebasket under the desk for the teacher to throw away any scraps of paper or used tissues during the day.
Well, it could be about Sakura hiding under a desk during a pop - up dangerous situation in the Naruto world. Maybe she's using her medical skills secretly to help an injured comrade while under the desk.
One possible plot could be that Naruto and Sakura are hiding under a desk during a dangerous situation in the ninja village. Maybe they are on a mission and things go wrong, and they have to take cover under the desk while they plan their next move.