上に

上に is used to add information about an existing situation, similar to saying “in addition to,” “besides,” or “not only... but also.” It links two or more facts, often emphasizing that the second fact adds to what has already been stated. It can be used after a noun (Nの上に), after an い-adjective or noun phrases (い-adjective + 上に), or after a verb clause (V dictionary form + 上に). It is common in formal or written contexts and often conveys a sense of further reason or consequence beyond what was previously mentioned.