Hi there! I quite agree, Rikyako is a lovely person. :D

Uh, I thought it’d be kinda obvious - as far as I know, you can’t. They were just a short-lived comedy duo back in 2007, and small-timers at that. If there was a recording at all, I highly doubt that one was ever uploaded.

What I do have, however, is their official comedian profile:

Affiliation: Free (Probably means that they’re independent performers who aren’t affiliated with a troupe)

Date formed: October 25, 2006

Member names: Erika / Rikako (Note: The “Rikako” here is a stage name, as the actual kanji is 梨香子 rather than 梨花子 as listed here.)

DOB: June 1 / August 8, 1992

Birthplace: Tokyo / Tokyo

Height: 160cm / 151cm

Weight: 39kg / 34kg

Official website: Comedy combo “Boshikatei” (Note: The link leads to a now defunct Ameblo page.)

Competition record: 1 match / 1 win / 0 loss

Description: As our name suggests, we’re the mother-and-child manzai combo Boshikatei. My daughter Rikako is a tarento who performs under the name Momoi Rikako.

The box on the bottom lists their one opponent, “Makkey”, but I’m not interested enough to fully TL that. Basically, they had a comedy battle with this Makkey person on April 4, 2007 in some theater in Shinjuku and won.

Since they only ever did that one match, I would be shocked if there was any existing videos of it. In fact, I’m so sure of this that I haven’t even tried looking. ¯\_(ツ)_/¯