The name Loyal Friend in Chinese / Japanese...

至友 is one way to say best friend in Chinese.

The first character can mean “most,” “extreme,” or “best.”
The second character means “friend” or “friends” (plural forms work differently in China).

Can also be translated as “close friend” or “most intimate friend.”

See Also:  Friendship | Soulmates

至交 is an alternate way to say best friend in Chinese.

The first character can mean “most,” “extreme” or “best.” The second character means “making friends” or “building friendship.” There's sort of a suggestion with the second character that fate caused you to intersect in life and become friends (that character can mean intersection in some context).

This can also mean “most intimate friend,” “very good friend of long-standing,” or “closest friend.”

See Also:  Friendship | Soulmates

親友 is the Japanese way to say “best friend.”

The first character can mean “relative” or sometimes “parents.” The second character means “friend.” Think about the close relationship that Japanese people have with their parents and relatives, and this starts to mean “close friends.”

Some Japanese-English dictionaries also translate this as “bosom friend,” “old friend,” “intimate friend,” “buddy,” “crony” or “chum.”

Note that in Chinese, this means “relatives and friends.” It's a good meaning in Chinese, but it's not quite the same as “best friends.”

盟友 means a sworn friend or ally. If you stand on the same side of an issue with someone and perhaps fight for the same cause together, this is the term you would use to describe such a partner.

There may not be a personal relationship, as this term is also used to describe whole countries that make a coalition or fight against a common enemy.

This would be most appropriate if you are a high-level military officer, giving this wall scroll to an officer of another country as you join forces together and go to war.

夠朋友 is a colloquial title in Chinese meaning “to be a true friend.”

真の友 is “true friend” in Japanese.