whats that first one from?
Original IP: Koishi Komeiji from Touhou Project series. The original art is known to be rather amateurish because it was drawn by indie dev. Dev later hired an artist to draw another set of portrait cgs of Koishi.
The lewd fanart I posted a while ago is drawn and animated by Takorin: https://www.pixiv.net/en/users/14235616