This is the 8716th most frequent Japanese word.
時弘
"時弘" (Tokihiro) is a Japanese name that can mean "time" (時) and "to expand" or "to prosper" (弘).
Here, '時弘' is used as a proper noun, referring to someone's name, specifically a person who is studying at the library.
時弘は図書館で勉強しています。
Tokihiro is studying at the library.
In this sentence, '時弘' is used with the honorific 'さん', further indicating that it is someone's name.
時弘さんは、先週学校を訪れました。
Mr. Tokihiro visited the school last week.
Here, '時弘' is again used as a proper noun, referring to someone the speaker wants to learn more about.