Himawari is spending time helping Chinatsu with her Valentine day gift, but Sakurako feels like a pain when Himawari is not around checking her homework.
I got an extra assignment 
because I forgot my homework.
Tengo trabajo adicional porque 
me olvidé de mi tarea.
Me han mandado más deberes porque se me olvidó hacer los de hoy.
Eu ganhei lição extra porque
 esqueci de trazer a minha.