Title says it all, share some Doujinshi that’s your personal favorites. Can be from your favorite artist or a random one you just love.

I don't know anything about Touhou, but this doujin and its sequels are just *chef's kiss*. Flanvia is really good at drawing horny faces.

I Got an Orc Dick! Then I Made an Elf Mother and Daughter Into My Personal Fuckholes Hiring a mage to breed her irresponsibly Hiring a mage to breed her irresponsibly 2

I love MILF doujins the most. Fair warning, there's incest and/or NTR in some of them.
Metorare ~Kairaku o Kizamareta Onna-tachi~ ch.1-3.5 KAENBOSHI Ch. 1-2 I can jerk off to my Mom Non Incest Woman Ch. 1-3 The Gym Teacher Is Skilled at Netori I could go on and on, but I'll stop for now.

Igyō kaikitan “kankandara” | Wonderfully Grotesque Mystery - Kankandara The Runaway And The Middle-Aged Man Hirowareta Onnanoko to Oji-san no Hanashi Kage no Tsuru Ito (Torokase Orgasm) Tsutawaranai Ai Unrequited Love Suki Suki! Okaa-san

I Came to Another World, So I Think I'm Gonna Enjoy My Sex Skills to the Fullest! I Came to Another World, So I Think I'm Gonna Enjoy My Sex Skills to the Fullest! 2 I Came to Another World, So I Think I'm Gonna Enjoy My Sex Skills to the Fullest! 3

Great "Harem" doujin with a dark twist

My favorites from Naruto:

Excelent Art, good sex scenes and great final. It’s a simple story, in itself, a male teenager is becoming a shut-in, his female childhood friend strikes a deal with him, if he manages to come to school, every day, she’ll please him (everything, save vaginal), and actual sex will reward actual highschool graduation.
[Gosaiji] Sotsugyou Reward

A man chooses a traditional Japanese guest house instead of a hotel as lodgings for his business trip: that was the best decision of the year. As he will find out, the proprietress needed dick.
Nengoro No Yado

One of the best vanilla doujins I've ever read

nhentai.net

https://nhentai.net/g/379667/

If you guys like futa this one is very good

nhentai.net

https://nhentai.net/g/212679/