Sekkou Boys

Ultra Super Anime Time was a 30-minute anime block produced by Ultra Super Pictures (Sanzigen, Ordet, Trigger, Liden Films) which aired on Tokyo MX and BS11 from July 3, 2015 to June 2016. Ultra Super Sisters are navigation characters of the program composed of Supica and Sumaco voiced by Kaori Ishihara and Yui Ogura respectively. The block features 3 short-length anime series.

(Source: Wikipedia, edited)

Series featuring abstract/experimental portrayal of characters or other aspects of the series.

Anime with shorter than average Episodes that are quick to finish.
Most of them but no exclusively comedy.
Not including sequels.

A simple list of most of the TV animes featuring male idols. Personally I recommend checking out Uta no Prince-sama and Ensemble Stars!

A curated list of series and shorts that span no more than 15 minutes, but satisfies your entertainment all the same. Arranged in color-coordinated rows because nothing makes lists look more appealing than a uniform order, trust me.

about Avant Garde genre,

Experimental fiction which shunned conventional storytelling at the time it was created. These stories often invoke unsettled feelings because they reject traditional ways in which we prefer to view (or escape from) the world. Narrative is avant garde works is often of higher importance than the content.

Deconstructions often fall into this genre. Note that simply being darker, edgier, or cynical doesn't mean the work is avant garde.

about the weirdest anime, well, actually I just said it, it's just some bizzare animes, I don't think I'm capable of understanding them all, but why not try? Weird things sometimes have interesting things hidden.

It's no secret that anime can get pretty weird sometimes. Many series take their audiences on a mind-boggling ride, leaving them to question everything they thought they knew about reality. While just about every anime title is weird in its own way, some are just beyond strange. They play with the audiences' minds, relying on psychological storylines and eccentric characters to keep everyone guessing.

Sometimes they don't even feel real at all and seem more like a strange dream. A lot of times, these kinds of series are too much for general audiences, becoming far too confusing to keep up with. But for those who enjoy the challenge, these anime are the perfect watch.

There are totally weird-anime titles that I have put on my other stacks before so I will not want to list them here because this is not a list to evaluate the quality of anime of different themes.

This is just what I found quickly, this list may change in the future

Literally every anime (excluding Music, Specials, and OVAs) about Male Idols that I found from the Idols (Male) section on MAL.
Arranged by air date > series.

Anime depicting life after graduating university. In other words, slice of life in adulthood.

Anime with episodes shorter than the usual ~20 minute runtime.

Collection of series featuring a female main character and a companion creature.

Boy and Creature: https://myanimelist.net/stacks/37389
Girl and Creature: https://myanimelist.net/stacks/28373

Will make you think "wtf am I watching?"

Anime with short episode lengths.

Anime with "me and the boys" vibe.

𝙍𝙀𝙂𝙐𝙇𝘼𝙍 𝙐𝙋𝘿𝘼𝙏𝙀𝙎 | 𝙌𝙐𝘼𝙇𝙄𝙏𝙔 𝙎𝙀𝙇𝙀𝘾𝙏𝙄𝙊𝙉 | 𝙑𝙄𝙎𝙄𝙏 𝙋𝙍𝙊𝙁𝙄𝙇𝙀 𝙁𝙊𝙍 𝙈𝙊𝙍𝙀
Anime where the main theme is idols and/or J-pop groups. Please note that this list involves both female and male idols so please investigate the MAL entry before watching if this affects your choice of anime.

ONAs, OVAs, TV series, movies and music videos