Wasn't It a Wholesome Romance?

Muriel Lake was reincarnated into an all-ages romance fantasy novel. It was definitely for all ages, but... When she came to her senses, she was matching her important parts with her childhood friend! How on earth did this happen? *** "Hng! S, Sion...?" "Why? Muriel, not enough. Huh? Open your mouth." The problem was that she never expected to lose strength in her legs from just a kiss. 'Are you a virgin? How are you so good!' Her body swayed every time the soft tip of his tongue brushed, rubbed, and sucked. Her spine tingled, and when the lips that had been sharing saliva parted, she even felt a sense of regret. "Are you okay?" His low voice deepened even more, and his eyes were...