is bleach episode 31 filler?

With the sun beginning to set in Soul Society, Ichigo Kurosaki and 6th Division Lieutenant Renji Abarai stare each other down near the steps leading up to Senzaikyū in the Seireitei, with Ichigo having sustained a head wound from Renji's last attack with his Shikai, Zabimaru, that drips a considerable amount of blood onto the ground. When Ganju Shiba and 4th Division 7th Seat Hanatarō Yamada express concern for him, Ichigo assures them this is nothing and Hanatarō is amazed that he can remain standing in this condition, though a sweating Ichigo notes his vision is blurry and his legs are trembling as he mentally urges his body to stop shaking.