💡 Detailed Explanation
"瀬戸際 (setogiwa)" refers to a critical juncture or a precarious state, like being on the brink of a decision. "倒産の瀬戸際" perfectly describes being on the verge of bankruptcy. "土壇場 (dotanba)" is the last decisive moment, and "窮地 (kyūchi)" and "難局 (nankyoku)" refer to difficult situations in general, but they don't carry the strong nuance of being "on the brink" as much as "瀬戸際."