noun
flood of emotions; many thoughts
Used in literary or formal contexts to describe a surge of deep feelings or countless thoughts welling up at once. Often appears in the set phrase 万感胸に迫る (one's heart is filled with a flood of emotions).
卒業式で万感胸に迫り、涙が止まらなかった。
At the graduation ceremony, a flood of emotions filled my heart and I couldn't stop crying.
万感の思いを込めて、彼は手紙を書いた。
With many thoughts and feelings, he wrote the letter.