このイベントは参加費が無料だから気軽に参加できるよ

N5 この kono this N3 参加 sanka participation, joining N3 無料 muryou free, no charge N4 だから dakara therefore, so, that is why N1 気軽 kigaru cheerful, buoyant, lighthearted N5 できる dekiru to be able to (to accomplish)

N3 参 san, shin / mai.ru, mai-, majiwaru, mitsu nonplussed, three (in documents), going N3 加 ka / kuwa.eru, kuwa.waru add, addition, increase N3 費 hi / tsui.yasu, tsui.eru expense, cost, spend N3 無 mu, bu / na.i nothingness, none, ain't N4 料 ryou fee, materials, redevance N5 気 ki, ke / ki spirit, mind, air N2 軽 kei, kyou, kin / karu.i, karo.yaka, karo.njiru lightly, trifling, unimportant

N5 〜から kara Indicates cause or reason, equivalent to because or since, connects two clauses explaining reason N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase N5 〜か ka Marks a question, alternative, or uncertainty, appears at the sentence end or between options N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information N5 〜よ yo Sentence ending particle adding information to listener, emphasizes statement, expresses certainty or warning