Mei-Shun finally contacted her important friends. 2 groups are respectively named after violet flowers by chance; 紫苑会, her high-school classmates and 桐花会, professors at the University of Tsukuba except for herself. The former consists of 4 women, the latter “father” Professor A, “elder brother” Prof. M and herself as well. If her niece M-chan would join, Prof. A have “grand” added.