Professor Nyanya (Blue Archive), vibrant full color illustration, long flowing purple hair messy, horn accessory tilted, tsundere expression with deep red flushed cheeks, looking back at viewer over shoulder with embarrassed but inviting gaze, small floating heart ❤ beside face, detailed school uniform partially removed, blouse hanging off shoulders, massive breasts pressing against bed, skirt pushed up to waist, completely naked lower body, on all fours on bed with ass lifted high facing viewer, rear view showing spread buttocks, detailed anus and clitoris visible, legs apart, semen dripping from vagina, used condom hanging filled with cum dangling between thighs, tally mark "正" drawn on thigh, tangled messy sheets, soft warm lighting, intimate bedroom atmosphere, "it's not like I wanted this" expression contrasting with pose, anime style, highly detailed, clean lines, professional rendering, 8k, masterpiece.