S2·E10 Be proud to graduate!! Yankumi and Class 3-D, tearful goodbye

After few days, the class 3-D will be graduating but problems occurred when Kudou came. The class 3-D promised not to fight till graduation but when Kudou's gang attacked them... On the other hand, the chairman is determined to kick out Yankumi together with her 3-D. What will Yankumi do?...