Analyzer
Sentence analysis
8Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
秘密
secret; confidential; private; mystery; secret (to success, etc.); key; esoteric teachingsnoun, na-adjective
を
object markergrammar
守る
protect; guard; defend; keep (a promise); observe (rules); followgodan verb
誓約
oath; vow; pledge; covenantnoun, suru verb
を
object markergrammar
した。
light/support verb with a noun or noun-like phrase-> するgrammar