Episode 10 has several between Jin and Yunoha. Jin is interested because he recognized the power that first defeated him, and Yunoha feels a connection with Jin because he seemed like her when she started school.
Episode 12 has few good moments for Amata and Mikono, as well as some Jin and Yunoha moments.
Amata opens up about his Mom to Mikono while Mikono tells him about her brother leaving her. This really shows the improvement in their relationship since episode 1 where they were clearly trying to avoid such topics.
While watching the movie together, they hold hands and due to his excitement Amata starts flying and he begins to carry her, Bridal style, while they both gaze into each others eyes.
Episode 13 where Donar shields Suomi from one of Mykage's attacks. Also, literally every scene between Jin and Yunoha after his official Heel Face Turn.