Let’s learn Japanese with manga. What you are going to learn on this page is:
(I will win today.)
今日（きょう）means ‘today’. おれ is ‘I’ although わたし is the most common word for ‘I’. おれ sounds a bit rough and impolite and is used by men.
は is a topic marking particle and does not mean anything.
勝つ（か・つ）means ‘win’. ‘lose’ is 負ける（ま・ける）.