The Story Behind My Swift Student Challenge Winning Submission
A three-minute SwiftUI journey inspired by my grandfather's diaries, exploring memory, immigration, and the shift from historical to modern Japanese.
Experience
Application Development EngineerLY Corporation · Internship
Updated LINE's sticker and emoji screens in UIKit for the Liquid Glass redesign and fixed iOS 26 layout issues in settings, aligning on styling with designers in English and Japanese. Also prototyped migrating the currency-history footer from UIKit to SwiftUI.
Write-upSix Weeks Building at LINE
LINE
LINE is Japan's leading communication app, with more than 100 million monthly active users in Japan.
Application Development EngineerSansan · Internship
Built a proof of concept for on-device Japanese contact search with Apple’s Foundation Models and MeCab, matching natural-language queries to names and companies. Also reworked Eight’s TipKit Premium reminders and expanded its Premium landing page, writing the specs for both.
Write-upWhat I built at Sansan
Eight
Eight is a business card app with more than 4.5 million users, offering QR card exchange and digitization for business cards.
Full-Stack Software EngineerBaseMe · Part-time
Built features for BaseMe's AI career chat, such as using your notes as context and stopping a reply, and redesigned how company recommendations appear. Also added profile view counts to help students get noticed by recruiters.
BaseMe
BaseMe is a career support platform in Japan that helps job-seeking students with AI-assisted career planning, applications, and scouting.
Application Development EngineerMIXI · Internship
Added country-based access controls to an AI feature that recognizes family members and suggests photos for albums, keeping it to legally approved regions with cached location checks covered by Swift Testing. Also replaced PanModal with native iOS sheets for iOS 26.
Write-upMy Internship Experience at MIXI
FamilyAlbum
FamilyAlbum is a private family photo and video sharing app with more than 27 million users across 175 countries and regions.
Google Student AmbassadorGoogle Japan
Part of the program's first cohort, sharing everyday AI use cases with more than 1,000 followers. Helped fellow university students learn to use AI safely and effectively.
Google Student Ambassador Program
A program offered by Google Japan for university students, focused on helping peers learn safe and effective AI use through Gemini, prompting education, and workshops.
Awards
Swift Student Challenge WinnerApple
Selected in 2026 for an app that impressed and inspired Apple with its creativity, technical skill, and thoughtful design.
MEXT Undergraduate ScholarshipMinistry of Education of Japan
Scholarship awarded through embassy recommendation, covering full tuition, living expenses, and travel for undergraduate studies in Japan.
Hackathons
Build with OpenAI HackathonOpenAI
SDGs to Startups HackathonTokyo AI
try! Swift Tokyo HackathonMercari
24-Hour Hackathon by 42 AsiaSUTD & 42 Asia
Talks
如何贏得 Swift Student ChallengeiPlayground Taiwan
A talk on turning a personal story into a winning Swift Playground, covering how to find an idea only you could build, grow SwiftUI skills under real project constraints, and use attention to detail to raise a submission from good to winning.
- Press · Oct 2026LY Corporation Tech Blog
MEXT Scholarship SpeakerMinistry of Foreign Affairs of Japan
Spoke at a Consulate-General of Japan in São Paulo webinar, sharing my MEXT scholarship experience with prospective students.
The 42 Live Radio Show이노베이션 아카데미
Joined a cross-campus podcast between Innovation Academy and 42 Tokyo, exchanging perspectives on the 42 Network with Korean students.
Vim na PráticaFora da Norma Podcast
Produced a Brazilian Portuguese tutorial for 42 São Paulo's YouTube channel, teaching beginners how to use Vim from the basics.
Education
Tokyo University of Foreign StudiesB.A. Language and Area Studies
École 42Computer Software Engineering
LanguagesCEFR
PortugueseL1
🇯🇵JapaneseC2
EnglishC2
🇪🇸SpanishC1
MandarinB1
Articles
Six Weeks Building at LINE
What I learned during a six-week iOS internship at LINE, from navigating a large UIKit codebase and refining Liquid Glass interfaces to bridging SwiftUI into an existing production screen.
What I built at Sansan
What I learned during a two-month iOS internship at Sansan, from working within a structured VIPER codebase and writing specifications before implementation to evaluating Apple’s on-device Foundation Models for Japanese business card search.
My Internship Experience at MIXI
Lessons from my first iOS internship in Japan, covering team communication, large-codebase navigation, Scrum, and shipping production changes.
Building a Mandarin Dictionary: Part 1
The first part of building a SwiftUI dictionary app from Taiwan's MOE data, covering the JSON structure, a SQLite schema, and a first stroke-count search.
NeoMnemo: My Submission for the 2025 Swift Student Challenge
How I designed and built NeoMnemo, a SwiftUI visual-memory app using Image Playground, adaptive layouts, validation, and card animations.
Understanding Binary Insertion Sort
How Binary Insertion Sort combines binary search with insertion sort, with C++ implementation details and a step-by-step example.
Understanding Insertion Sort
A clear explanation of insertion sort, from its C++ implementation and complexity to a step-by-step walkthrough of each insertion.
Understanding Casts in C++
A guide to implicit conversion and C++ casts, including static_cast, dynamic_cast, reinterpret_cast, upcasting, and downcasting.
Understanding the Orthodox Canonical Class Form
A walkthrough of the constructors, copy behavior, assignment operator, and destructor that define the Orthodox Canonical Class Form in C++.
Writing Makefile for C++ Projects
A step-by-step guide to writing a C++ Makefile with variables, compiler flags, build rules, cleanup targets, and .PHONY declarations.
Replicating the Print Function in C
A from-scratch C implementation of printf using variadic arguments, format parsing, custom output functions, and basic error handling.
The Dining Philosophers Problem
A detailed C implementation of the Dining Philosophers problem, covering mutexes, threads, fork assignment, timing, supervision, and shutdown.
The XOR Swap
A mathematical and practical explanation of swapping two values with , without allocating a temporary variable.
Understanding Signals in Linux
A concise introduction to Linux process IDs and signals, including how to send signals and handle them safely in C.
Introduction to Vim
A practical guide to Vim's modes, movement, editing commands, search, macros, marks, tabs, and other essentials for working efficiently.
Introduction to Pointers in C
An introduction to C pointers through memory addresses, the address-of operator, dereferencing, and a small practical example.
I like building things that feel native.
My projects often begin with something close to me: a family story, a language I’m learning, or a tool I kept wishing existed. From there, I build experiences that feel natural to both the platform and the person using them.
I work mainly on iOS. Lately, I’ve been exploring on-device AI and the ways software can connect people across languages.