Each tool targets a distinct function: chosung extraction, amount formatting, holiday listing, and business-day checking. The only mild overlap is between korean_holidays and is_korean_business_day, since business-day logic depends on holidays, but the descriptions make the boundary clear (list vs. boolean check).

All names use consistent snake_case with descriptive English tokens. There is minor variation in style—two verb_object names (extract_chosung, number_to_korean), one noun phrase (korean_holidays), and one predicate (is_korean_business_day)—but the pattern remains predictable and readable.

Four tools is small but each one earns its place in a Korean locale utility kit. It is slightly thin for a general-purpose toolkit, but not so sparse that any tool feels like filler.

The surface covers chosung extraction, Korean amount formatting, holiday listing, and business-day checks, but has notable gaps: no reverse conversion, no business-day arithmetic (e.g., add N business days), no per-date holiday-name lookup, and no other common Korean text utilities like jamo decomposition or romanization.