A mustached man with black hair is seen from the side, standing hunched over with his trousers dropped and the handle part of an oar sticking out of his butt (i.e. the paddle part is IN his butt). Behind him is another man with black hair and a mustache, looking like he belongs in an 80s porno and wearing nothing but swimtrunks. He has one foot on the ground, the other on the first man's butt and is trying to pull the oar out. In the background are three people looking at this: a blonde individual who looks like but may or may not be a girl, a teenage boy with black hair and a Secret Service-looking fellow with black hair and sunglasses. All are wearing swimsuits.
That's where all the good friends are
Kodomo no Omocha 1996, prolog for most later episodes.
18+ Stop!! Hibari-kun!
Marking as NSFW just in case.
"Please don't ask where the blood came from."
Majutsushi Kunon wa Mieteiru (Kunon the Sorcerer Can See), episode 2
[Anan-san wa Deatte 3-byou de Gattai shitai!]
"Can you give me a hint?"
Angel Beats!, episode 2
[The Greatest Estate Developer]
[Tamagawa-san Detemashita?]
[Seiren]
[Denpa Onna to Seishun Otoko]
Neighbor's Club
Anime: https://anilist.co/anime/10719/Boku-wa-Tomodachi-ga-Sukunai
Redo of Healer
[Sekkou Boys]
[Toru ni Taranai]
[Alma]
[Yakitate!! Japan]
[Boku ga Aishita Subete no Kimi e]
Close enough
Transferred to the Gyaru Academy
[Chuunibyou]
[Akuma no Memumemu-chan]
[WWW.Working!!]
[Kure-nai]
[Otona no Bouguya-san]
[Do You Love Your Mom and Her Two-Hit Multi-Target Attacks?]
[gdgd Fairies]
Anime
[Tesagure! Bukatsumono Encore]
Anime