Second mode in torsion instaed of translation

In my structure G+6 floor building consist of full (like mican system ) shear wall system with min. of 160mm wall, as per Indian standards it fall under seismic zone III.
Here the model mass participation will in 2 nd mode lies in torsion seems time period for tosrion mode is less then translation mode how will stiffened the structure in torsion.