Ep. 4: Mitsuki investigates Haruka and Yuu's relationship during a ghostly test of courage.
Aired on January 31, 2014

Suspecting a romantic connection between Haruka and Yuu, Mitsuki enlists classmates Yuzu Iizuka and Kaede Ikeno to monitor them and record any suspicious behavior. The group later participates in a test of courage. During this event, Mitsuki attempts to secretly follow Haruka and Yuu but is accidentally perceived as a ghost by Yuu. Overcome with fear, Mitsuki becomes terrified and begs Haruka to kiss her in order to soothe her nerves. This incident highlights the tension arising from Mitsuki's jealousy and the chaotic nature of the school activity, leaving the group in a state of shock and confusion regarding the unexpected outcome of their investigation.
Episodes
- Ep. 1 · Haruka and Yuu begin high school with a secret kissing pact to preserve their bond.
- Ep. 2 · Shizuku and Kotone resolve their misunderstanding through a kiss while helping Yuu study.
- Ep. 3 · Yuu's sister Mitsuki breaks glasses while Haruka helps save the sports festival
- Ep. 4 · Mitsuki investigates Haruka and Yuu's relationship during a ghostly test of courage.
- Ep. 5 · Haruka and friends invite Mitsuki to tea to persuade her to join the class Snow White production.
- Ep. 6 · The girls hold a school sleepover for cultural festival prep, followed by festival events and confessions.
- Ep. 7 · Kotone's Pool Invitation and Yuu's Scarf Shopping Adventure
- Ep. 8 · Haruka and Yuu navigate misunderstandings at a wedding and confess feelings on Christmas Eve