Leon and Alice are a pair of sibling chuubas. While leon is /here/, his sister is a total normalfag. The unique thing about them is they're less like permanent-collabs and more like one of them plays the vidya and the other just do whatever and focuses on chat. I suppose it simulates the experience of hanging out in your friend's house while his sister in the same room polishing her nails or something. My favorite parts are to subtly break containment and have Leon damage control to keep Alice in the dark, or forcing Leon to explain to Alice hyperspecific nerd shit like Warhammer and she does the typical "BUT WHY" sister thing.
They both fit "talk with a cute girl" and "watch specialized games" at the same time. Based tastes in vidya too. Lobotomy Corporation and Rimworld are examples.
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https://www.youtube.com/watch?v=EQcsH7_oyy8LEON LET ME PISS IN YOUR SISTER'S ASS 