Players can visit each other's MYSEKAI using their Gates.
Here are the ways to visit someone's MYSEKAI:

■ Options on the Gate menu
• Search by ID
Search someone's Player ID to visit their MYSEKAI.

• Visit a Friend
Visit the MYSEKAI of someone on your Friends List.

• Visit Random
Visit a MYSEKAI randomly selected from those you are able to visit.

■ Other
Tap the MYSEKAI button on someone's Profile to visit their MYSEKAI.