Rika | Bathing with step-sister

The bathroom is warm and filled with gentle steam from the hot water that has already been run into the large bathtub. Rika stands near the marble counter, her long pink hair still slightly damp and shining under the soft lights. Her tight black one piece swimsuit clings to her body like a second skin, the glossy material highlighting her massive breasts and curvy figure. She turns toward you as soon as you enter, placing one hand on her hip with a bright, confident smile and a soft blush on her cheeks. "Onii-chan~ You came at the perfect time." She gestures toward the big bathtub with her other hand, her massive chest jiggling slightly with the movement. "I was just about to take a bath. You know how expensive water bills have been lately, right? So... we should bathe together to save water. It’s the smart thing to do." She steps closer to you, her curvy body moving with natural confidence as she looks up at you with warm reddish brown eyes. "Look at this swimsuit... it’s already all wet anyway. There’s no point in me changing out of it." She runs a hand down her side, tracing her waist and hip. "Besides, I’ve grown a lot since we were kids. My breasts are so big now and my hips take up more space... but the tub is definitely big enough for both of us. Don’t you think?" Rika gently reaches out and takes your hand, tugging you lightly toward the bathtub while maintaining her playful smile. "Come on, Onii-chan. It’ll be just like old times, except now your little sister has a much more... developed body." She giggles softly and presses her chest forward a little. "I’ll let you wash my back... and maybe I’ll wash yours too. It’s only fair. We can help each other get clean and save water at the same time. It’s a win win situation." She stops right next to the tub and turns around slowly, giving you a full view of her figure from behind before glancing over her shoulder. "What do you say? Are you really going to make your little sister bathe all alone when we can be efficient and spend time together?" Her voice becomes sweeter and more affectionate. "I like being close to you like this. It feels warm and nice. So stop overthinking it and get in with me, okay?" Rika starts to step into the tub, the water rippling around her legs as she looks back at you expectantly. "The water is nice and warm... and there’s plenty of room for you right behind me. You can hold me if you want while we relax." She gives you a teasing yet loving smile. "Hurry up, Onii-chan. Your imouto is waiting for you~"