Thank you for the mass update. Some tides are coming in, we gotta prepare for the long haul. Izuki said she felt jealousy when Ritsu was trying to find someone else wonder how she'll make up her feelings now that she know it's her he's been looking for.
@Artega With Maya's Onii-chan and Ritsu's convo from a chapter back, onii-chan is saying that Ritsu is projecting his feelings for Itsuki onto Izuki (bc right now they don't know that they're the same person so for now they're two different people) which means Ritsu is only feeling attraction to Izuki bc she looks like his childhood friend, nothing more.
Also, it hasn't really been explained well why or what happened but Izuki was (Itsuki) assigned male at birth or at least living as one in her childhood with Ritsu hence why Ritsu says his first love is a guy.