かみつ過密kamitsu
1.
A condition in which there is an excessive concentration of population or industry in a specific area, leading to negative consequences such as pollution or traffic congestion.
2.
The state of having schedules or plans that are packed too tightly, leaving little to no room for additional activities or changes.
Example:
彼は過密スケジュールを都合して、私の舞台を見に来てくれた。