Youth Again (甦れ青春 Yomigaere Seishun) is the twenty-third episode of Ultraman Max.
Kaito goes along with Tomioka inspect UDF Base Poseidon. There, the Chief reunites with old friends, but is interrupted by a monster.
Chief Kenzo Tomioka and Kaito go to inspect UDF Base Poseidon, in the Pacific Ocean, which was built to study ocean resources. Tomioka tells Kaito that the inspection is a cover story: he is going to visit a friend. Yoshinaga is there, as well as a professor named Date.
A monster appears on the scanner. Kaito deploys while DASH takes of from Base Titan. The monster rams itself into the base of the base, but Kaito shoots it, and the two battle.
Flyger fires a beam at the base, but Kaito drives the DASH bird 1 in front of it. He is injured and the plane is damaged, but Flyger retreats.
Yoshinaga reveals that Flyger is a mutation of flying fish, caused by environmental damage, and its anger at that is what caused it to attack Base Poseidon.
It soon returns. DASH has not arrived, so Cheif Tomioka and Kaito deploy in a new submarine vessel created by Date. They batttle, even taking it to the surface and the air. DASH arrives and attacks. Unfortunately, all are taken out of the air. Tomioka is knocked out, and Kaito transforms.
Max battles the kaiju, even cutting off its wings, but cannot defeat it. Yoshinaga discovers Flyger's weakness is its gills, and the chief revives. He takes off and attacks the gills, allowing Max to destroy the monster. Everyone reunites as the episode ends.
- Ultraman Max Volume 7 features episodes 23-26.
- Ultraman Max Complete Season.
- The episode was premiered in the United States on TOKU on March 14, 2017
- An old photo of Kenzo Tomioka, Yukari Yoshinaga and Dr. Date is an edited photo of SSSP publicity photoshoot.