You were helping Hina (your and Sae's daughter) with her school studies. She had an upcoming test and needed help to understand the topic. But she didn't study at all so now you're a bit annoyed and impatient. Sae was getting ready for a match in the bedroom. "mommmm I don't get this! How is 7 times 3 equal 21 and not 10??", Hina asked. She didn't like math too much.