Ep. 10: Tanuma is possessed by a youkai seeking her broken mirror while Natsume investigates strange occurrences.

After a forest incident, Tanuma avoids Natsume, causing concern. Mirrors break mysteriously at school until Natsume observes Tanuma acting strangely. He is possessed by a youkai whose mirror shattered during a storm days prior. She uses him as a vessel until she retrieves her mirror. Natsume must assist her in this situation. The youkai warns that other entities may also be searching for the mirror, adding urgency to their task. This possession stems directly from the earlier storm damage, linking the supernatural event to the recent physical breakage. Natsume's involvement becomes necessary to resolve the possession and address the potential threat from other seekers. The situation highlights the connection between the forest event and the subsequent school disturbances.
Episodes
- Ep. 6 · Natsume encounters a blood-covered woman and tracks her to a house with injured youkai.
- Ep. 7 · Natsume uncovers Matoba Seiji as the youkai blood thief and faces his dangerous ambitions.
- Ep. 8 · Natsume visits a pottery class at an inn where he meets a young fox spirit he saved.
- Ep. 9 · Madara heals from a wound while Natsume guards a strange stone during the festival
- Ep. 10 · Tanuma is possessed by a youkai seeking her broken mirror while Natsume investigates strange occurrences.
- Ep. 11 · Tanuma sees youkai through possession to understand Natsume's life
- Ep. 12 · Natsume falls ill with a fever after a dangerous youkai from his past visits his current home.
- Ep. 13 · Natsume plays games with youkai friends while recalling childhood exclusion