Sakura MMO, a hentai visual novel developed and published by Winged Cloud. Released October 15, 2018. Available at Steam for PC Windows. No voice acting.
Kotone is a gamer girl. Shes loves a popular online RPG, Asaph Online. Inside the game shes a powerful, perverted dark witch named Viola with a harsh reputation. After defeating a tough rival player in PvP, Kotone voices her sincere desire to live as Viola forever.
Somebody heard her prayers, because next morning Kotone wakes up inside her characters body.
Source: N4G PC [NSFW] Hentai Game Review: Sakura MMO – Hentai Reviews