Ep. 155: Jariten discovers a love locket from Lum and Rei's past during Mendo's octopus birthday party.
Aired on May 8, 1985

Jariten locates a fragment of a love locket that Lum and Rei originally received during their previous romantic relationship. The discovery occurs amidst the festivities of a birthday celebration hosted for Mendo's favorite octopus. Lum is determined to conceal the existence of this sentimental item, particularly from Ataru, who is present at the gathering. Her efforts to hide the truth drive the narrative tension as she navigates the social dynamics of the party while trying to prevent Ataru from learning about her shared history with Rei.
Episodes
- Ep. 151 · Boredom Syndrome! Is Tomobiki Town Wasting Away!?
- Ep. 152 · Ran prepares love mushroom oden for Rei but Kotatsu Neko consumes it
- Ep. 153 · The Armored Girl Returns for a Stormy Date at the Mizunokoji Estate
- Ep. 154 · A mysterious priest summons the group to ring a shrine bell in a competitive battle
- Ep. 155 · Jariten discovers a love locket from Lum and Rei's past during Mendo's octopus birthday party.
- Ep. 156 · A middle-aged man and his daughter open a teahouse that becomes a frequent battleground for Tomobiki High School students and staff.
- Ep. 157 · A ghost girl who loved Ataru while alive seeks a date with him.
- Ep. 158 · Pure Fox Returns as Shinobu-san Embraces Love
- Ep. 159 · The Hamajaya Restaurant Struggles to Attract Customers at the Beach