In Secret Mission 4, Riko is starting to realize that Noma might be more than just her junior colleague. Trouble is, admitting it out loud feels way too embarrassing. So she comes up with a cheeky excuse: she claims the aphrodisiac the gang gave her is still affecting her, and finally makes the first move herself. Noma is caught off guard, but the chemistry between them has been building for a while. Turns out their fake newlywed act may have stirred up some very real feelings.