Yuunou na Gunjin Koutei wa Katabutsu Reijou wo Amaku Dekiai suru

Zoe, an archaeologist, is selected to be an interpreter during negotiations for a military agreement with the Balogaros Empire. She was handpicked by the other country's imperial prince, Valzus, who was once her friend. He wants to seduce Zoe during her stay. "If you have any pity for me at all, please let me touch you." He falls to his knees and pleads with her, and in exchange for a promise, she allows him to touch her. After a night of wild passion, Zoe realizes that she has been hiding her feelings for him, but she has her own reasons for not accepting Valzus's love! (Source: Mitsuneko Bunko, translated)