Idea and Design for Matsuya Ginza "Father's Day".
A letter with a clue.
"Letter With Window To Tell One's Feelings"
The message is peeked through the window, "Thank you!", "Good Luck!".
Write a word in the blank of the card and you will be able to make your original letter casually without being shy.
It's novelty, not for sale, only for customers who purchase Father's Day Gifts.