Ero Imo Cyclone! ~Uzumaku Eroero wa Imouto o Chuushin ni Kyuusoku Kakudaichuu!~

"Make a quick detour today and come back later." With that, I finished my university classes, killed some time, and then returned home. When I entered the living room, I was greeted by a sumptuous feast and Sakura and Satsuki. I sat down, scratching my head in confusion. Then Sakura said, "Satsuki will be staying with us for a while starting today." We talked about this and that, but it seemed like all the luggage had already been brought in, so I finally gave in and we agreed. "Well, she's in that mysterious adolescent phase where she loves sleepovers, she'll get bored of them soon," Or so I thought... However, Satsuki had transformed into a veteran soldier. I was already struggling against Sakura alone, but now I was completely defeated by the overwhelmingly powerful reinforcements. The battle continued for a while, and just as our forces were clearly at a disadvantage, a visitor appeared. "Um, I came to check on you, Onee-san." However, Satsuki had transformed into a veteran soldier. It turns out she's Satsuki's younger sister. She hadn't seen her for a while and was feeling lonely, so she came to check on her. As we chatted, it seemed like she wanted her to come home soon. A ray of hope has dawned on our army! And so my counterattack begins...! I hope so.