Hastur is from Haiyore! Nyaruko-San.
A male Hasturan (alien from Hastur) who was the space elementary school classmate of Nyaruko and Kūko. He is the son of the owner of CCE (parody of Sony Computer Entertainment), a famous video game company in space. He was first sent to get intel of Earth's entertainment, but he failed and decided to stay on Earth, and was later hired as an agent of the Space Defense Agency. He enrolls in school under the name Hasuta Yasaka. He possesses the power of air, fights by creating strong wind, vacuum blades, or forming nearby vacuum areas around enemies.
Reason For Cross-Dressing
Hastur cross-dresses to win over series protagonist Mahiro Yasaka.