Yuji Sekiya
The weird stuff is the good stuff.
New to Contra
Yuji is ready for their next project!
TUMMYGOTCHI is a playful children's nutrition app where a pixel-art gut microbe character lives in your kid's belly and reacts to what they eat. Kids snap a photo of their meal, AI reads the ingredients, and TUMMYGOTCHI responds in character — then a collectible poop creature bursts out based on how well they ate, with parents getting a cheerful notification. The science of gut health is delivered entirely through the weird, emotional voice of the character rather than lectures, turning healthy eating into a game kids actually want to play.
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decoboco is a generative visual identity for a music studio that turns each neurodivergent child's name into a unique, hand-painted "Sound Portrait" — mapping letters to colors and notes to prove every child has their own beautiful resonance.
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Logo work for Independent music label Left Pocket Groove
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KIMINO works — kimi no ("yours" in Japanese) gives a specialty cafe a warm, personal spine — but only if you deliberately handle the "kimono" echo and actively build the "yours" meaning into the branding, otherwise it's just a pretty but empty word (and check trademark — a Japanese sparkling tea brand already uses "Kimino").
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