"Obsessive" means almost persistent in Chinese. Guo Moruo's Can Chun: "Our obsession with life is getting deeper and deeper." Feng Zhi's poem "Curtain": "I'd rather die of my obsession, and my heart is frozen like ice."
English:
1. Not flexible
Step 2 stick to it
Japanese: しゅぅねん
Supplementary answer:
The more formal translation of "fetters" in English is: trammels fetters; Yoke; Chains; Jumper, the specific choice depends on the context.
Japanese translation:
Fetter: きはん
Roman in Black: Keehan
China analog voice: Khan