soramafuuasaka (or smus as i will call them since i'm not typing out the full thing every time) is a japanese video game-based utaite unit with mafumafu, soraru, uratanuki, and tonari no sakata. their songs usually are based on different genres of video games that are popular in japan, such as otome (dating sims), shooter games and other types. this idea is thought it be based on the fact that the four regularly play video games together, and are someetimes streamed on platforms such as youtube. they also regularly do new year's livestreams together, which are streamed on youtube!!!
they have an active fanbase, having a revival after thee release of their newest song, 'jinsei muri game', and one of their songs (role-playing game) was trending around 2019-2021 as many people would make animations to the bridge of the song. they usually have animated music videos with bright colours as well as the different members' personas.

as well as smus, the four are also in two other utaite groups, with mafumafu and sorau being in after the rain & tonari and sakata being in ussss with senra and shima