Ultraman R/B: S1 E17 - We Are Friends Ultraman R/B

On the day of Halloween, two beings from different planets across the universe are both troubled: alien Dada couldn't find guests to attend a party, while Asahi couldn't find a place to hold a party. When the two met, they plans to hold a fantastic party together - until Dada finds out that Asahi is the sister of the two Ultraman! Would the party be successfully held?