HAYATO EIHARA

Built and operate a cross-border e-commerce store selling Japanese products to international customers. Handled everything solo — store setup, product sourcing, international shipping logistics, customer support, and marketing. The store serves customers worldwide and processes payments in multiple currencies.

Built and launched a SaaS tool that helps businesses collect, manage, and showcase customer reviews and testimonials. Businesses can create custom review collection forms, share them via link, and display approved reviews on their website using an embed widget. Features include...

Built and launched an AI-powered SaaS tool that helps freelancers generate tailored project proposals in seconds. Users paste a job description, and the AI produces a professional, customized cover letter ready to submit. Features include saved templates, tone/style adjustment,...