A dead mother, a suddenly reappeared father, and a new stepsister who happens to be an idol. The premise reads like every harem setup ever made, and the OVA knows it. What it does instead is treat the actual emotional wreckage of that situation like it matters, letting awkwardness and grief sit in the same room without trying to turn it into fanservice. One episode means it never overstays the joke, which is exactly when comedy about messy families works best. The real hit is that it finds something genuinely human in what could have been disposable.
After his mother dies, high school student Hiroshi Houshou expects to face life on his own. Then his long-lost father turns up alive and well, and he turns out to be a famous singer. His father is about to marry a well-known actress, whose daughter is Rina Yuuki, a popular and beautiful idol singer. Hiroshi is suddenly pulled into a hectic world of wealth and celebrity, and he has to find a way to adjust to his new family. This one-episode comedy OVA is adapted from a manga by Katsu Aki.