Lize Helesta is a female Japanese Virtual YouTuber and member of Nijisanji. She is the second princess of the Helesta kingdom.

Snack Time! is NIJISANJI's first full-scale 3D animation video content where fans can catch snippets of the daily lives and shenanigans of their favorite NIJISANJI VTubers. 
(Source: YouTube description)

Music video for the song Alche Miss Katrina by Ange Katrina.

Conceptualized opening movie for Nijisanji's Page of Lambda, a "what if" original anime series based around Ange Katrina, Inui Toko and Lize Helesta better known as "Sanbaka". 

What if their original story was made into an anime...? 

We imagined and created an "if" world for these girls and produced an opening animation alongside production setting materials. 

This is a new story for Sanbaka that transcends the boundaries between reality and fiction, let's go on a journey together to imagine and create a new side of them. 

(Source: Official Website, edited, translated)