just a friendly date/duel with a fox youkai
the whole relationship of ei and yae miko can be summarized if yukari and yuyuko switches their position. At least that's how i see it.
Yuyuko/Ei: going all purple while given the power to watch over her nation. Still secludes herself. And cause incident.
Yukari/Miko: still insightful, witty, and charmful as ever, keeps teasing the MC but now are in charge with the ghost tree.
altho miko is 1100 years younger than yuka-