I have a new girlfriend, Tomoe! I was so happy, but I ended up having my first time with her little sisters! How did this happen? The double blowjob and pussies of the two young girls, Rin and Anzu, were so good that I ended up coming inside them… But it's all because they want Tomoe and I to be happy… they care so much about us! I'm going to make Tomoe-chan feel good, too!

(Source: Comic Mujin, translated)

1-4. Imouto Koakuma Cupid (妹小悪魔キューピット); Comic Mugen Tensei 2019-08, 2020-01, 07, 11
5. Imouto Sefure (妹セフレ); Comic Mugen Tensei 2021-03