Entwined Obsession, Making Love Until Conception: I Can't Suppress This Heat

"You're my fated mate" Mikoto Tachibana lives her life as a regular beta. But one day, she ends up meeting an elite alpha named Ritsu Yakumo in town. Even though they just met, the moment their bodies touched, Mikoto felt like she was burning up. Driven by instinct, she kisses him, and although it was her first time, the pleasure she felt made her go crazy... Mikoto realizes that she is an omega, and Ritsu becomes fiercely and sweetly possessive over her. And yet, there is still no suppressant to control an omega's heat... They can't hold back their instincts... (Source: MangaPlaza)