The best version of the miraculous natural I-cup, child-faced glamorous beauty Yumi Shion's entire trajectory at S1 is here! This work includes all 38 titles and 100 sex scenes from her time at S1, featuring everything from her first sex, train molesting, clothed big breasts, bondage drama, NTR sharing a room, fan appreciation festival, comic collaboration, to slutty esthetician, packed with highlights of real play for a long 16 hours. After watching it myself, I was captivated by Shion-chan's lovely looks and natural big breasts without any unnaturalness, especially the distinctly colored nipples, and the many oil scenes were very satisfying. However, the best version also has its dilemmas, with some fans saying, "Huh, this part is cut out?" That said, the 16-hour volume and good cost performance are commendable, so it might be a good idea to first experience Shion-chan's charm with this best version and then purchase your favorite works separately. Don't miss out on Shion-chan's three years of exquisite sex at S1.