Episodes

Keita and Kuro encounters a Tribal End sent to capture her alive after the previous encounter at the ramen stand was deemed to be a failure due to the Tribal End's defeat at Kuro's hands. In the midst of the fighting, Keita is killed when his heart was pierced by the Tribal End's mysterious Exceed energy in an attempt to fight Kuro. To save Keita before he dies from his fatal wounds, Kuro decides to create a pact between them by exchanging their hearts after she was able to bring him to safety. Kuro was once more able to defeat the Tribal End by electrocuting him after she created the pact with Keita successfully.

Keita had some new issues with Kuro, regarding the concept of Synchronization as he felt his entire life had changed after Kuro created the pact. It was until the encounter with Keita's teacher and covert Tribal End agent, Tsubota-sensei, that Keita realizes that Kuro was right all along and thus teamed up with her to defeat him after Tsubota initially gains the upper hand against Kuro due to issues of synchronizing properly with Keita. The two escape from school, leaving an unconscious Tsubota behind after Kuro was able to incapacitate him by sychronizing together in order for Kuro to use her Exceed abilities against her opponent.

Excel and Steiner conduct a covert mission to test Akane if she has strong Tera energy flowing throughout her body after the two had arrived in Japan. Later on, Akane meets with Keita and Kuro in a small restaurant after being followed secretly by Steiner and Excel from the local bank where she works as a teller. However, the three are ambushed by Tribal End bikers sent to apprehend Kuro and eliminate Kuro and Akane. With Steiner's intervention, he engages Kuro in a fighting match to test their fighting strength after driving the Tribal End bikers away from them when Kuro was not able to defeat the bikers herself.