The Blarney Irish pub and Cafe alternates between two modes according to the time of the day. Taking place in the restaurant underground floor of Japan Post Tower Building at Osaka Station, the establishment functions as a Cafe from early morning to turn into an Irish pub in the evening. The bar cabinet uses pivoting doors that hide and show either alcoholic beverages or cafe utensils. Two dimensional monochromatic art inspired by Irish aesthetics on the walls replaces the traditional decorative aesthetics to blend in both functions and creates warm yet simple and smooth atmosphere.

Tetsuya Matsumoto is the founder and Head Architect Designer at KTX archiLAB based in Japan, and a Lecturer of a space design course at Osaka University of Art. After graduating from the same university, he specialized in commercial space design and built a large portfolio of projects varying both in type and scale, from shops and restaurants to offices and clinics, and from a small pharmacy to a large Hospital. Tetsuya has received more than a hundred local and international design awards and became a jury member for several prestigious prizes.

The Blarney Stone is brand of Irish pubs based in Osaka, Japan, and counts three shops as of February 2025. The two original Pubs in Umeda and Shinsaibashi are classic Irish pubs with live music and sporting events viewings. The two counts as the reference of Irish pubs in the city. The third and newest shop that takes part of Osaka Station city has a new concept that blends Irish pub and Cafe services.