Deadly Designs in Darkness! Attacking With Fighting Spirit (くらやみ殺法! 闘魂の一撃 Kura ya mi sappō! Tōkon no ichigeki) is the 15th episode of Ultraman Leo.
Alien Flip suddenly appears in Tokyo and begins attacking. MAC arrives, but the alien vanishes without a trace. Later, at an ice cream shop, a man stares at Gen until Momoko comes and goes off with him. Flip appears, and Gen has to rush off to intercept it. TBA
- Ultraman Leo Volume 4 features episodes 13-16, & Complete DVD-Box features all episodes.