Method for manufacturing glass panel unit, and glass panel unit assembly

A method for manufacturing a glass panel unit, the method comprising:

• an arrangement step including arranging a first glass substrate and a second glass substrate to make the first glass substrate and the second glass substrate face each other with a seal member interposed between the first glass substrate and the second glass substrate;
• a bonding step including bonding the first glass substrate and the second glass substrate via the seal member;
• and
• a cutting step including cutting off the first glass substrate and the second glass substrate along an identical line as viewed in a direction in which the first glass substrate and the second glass substrate bonded together face each other and along the seal member,
• the cutting step being a step of forming multiple sets of the first and second glass substrates divided by cutting off the first and second glass substrates along a plane where the seal member remains along respective sides of cross sections of the first and second glass substrates, and
• the cutting step including:
• a first cutting step including cutting off the first glass substrate from a surface of the first glass substrate;
• and a second cutting step including cutting off the second glass substrate from a surface of the second glass substrate.