KanjiJLPT N2
Request (Formal)

solicit, invite, ask

Mnemonic

To submit a Request (Formal), you must select your words with care and inscribe them in blue ink on official parchment. The palace clerk sniffs the ink — if it isn't blue, your petition is shredded on the spot. Only blue words earn a formal audience with the king.
Additional thoughts
Blue ink on official documents is a universal symbol of formality. Picture a clerk literally sniffing the ink color before accepting your petition — the more absurd, the more memorable.
Quick recall
Careful words in blue ink earn you a Request (Formal) before the king.

Details

The keyword for 請 is request (formal). This kanji refers to the act of making a formal or earnest request, petition, or appeal, often in an official or polite context. It conveys the sense of asking for something with sincerity and proper decorum, such as submitting a petition to an authority or formally inviting someone. In Japanese, it is commonly seen in contexts involving official applications, formal invitations, and contractual undertakings.
On'yomi
せい、しん、しょう
Kun'yomi
こ.う、う.ける