About
Why not try being the younger sister (or brother) of the sis-con May4?
Characters
May4
A sis-con (or brother-con) older brother! Usually a cheerful, curious boy, but turns into a total sis-con whenever his younger sibling is around!
Alien Pilaf
May4's close friend. Energetic and full of curiosity! May4's senior.
Gamix
May4's close friend. A high-spirited person from Kansai!
Furukawa
May4's close friend. Energetic, kind, and reliable! May4's senior.
Intro
Streaming at May4's house
Furukawa
Reading comments Let's see... "May4, do you have a younger sister or brother?" That's what it says~
Gamix
Whoa, I'm curious about that too~
Alien Pilaf
Well? What's the deal!
Release Date 2026.08.18 / Last Updated 2026.09.01