△○□×, also known as Miwasiba (みわしいば), is an illustrator that has provided many illustrations for various producers. △○□×'s most notable works would be the cover for PONPONPON and Tsukema Tsukeru by Giga-P, and a fanmade PV for Unhappy Refrain by wowaka. They are the illustrator of V4 flower, MEIKA Hime, and MEIKA Mikoto, and are also a game creator. Their games include Alice Mare, the LiEat series, 1bitHeart/its sequel 1BeatHeart, and The Faceless Double (being released in chapters). They have also produced a manga series titled 'NotEvil!'.
They have decided not to state their gender, expressing on social media that they wish for people to imagine them as whatever gender they want.
As of 2015 they started producing their own songs. They mostly used Kagamine Rin.
Miwashiba's first original song with Flower and Kagamine Len. This song was also the first original song to be uploaded to miwashiba's NND account, unlike the Youtube upload it was sung by Kagamine Len