1) It's interesting how different Seo's interactions with Amane and Ijichi are. Ijichi sort of pushes him to be a better version of himself while Amane allows him a space to be comfortable and enthusiastic. Similarly, Ijichi and Amane give each other someone to be emotionally vulnerable with. They're really a great throuple.
2) I'm super happy to finally see some more Kiramon! Having it constantly referenced but never actually shown was driving me crazy with curiosity.