[際「さい」]して/に([際「さい」]し)/に[際「さい」]しての => At the time of A (which starts now).. N2
Time, Situation
で => At,in,by... N5
Particles
でござる/でございます => By, with… N4
Honorifics
んです => Because, by… N4
Situations and Experiences
て、~で => Since V1then V2 N5
Change, cause and effect
であれ,であろうと => Even A, Both A and B N1
(Not)only , (Not) even
までだ/までのことだ => Only A (will be done) N1
(Not)only , (Not) even
ので => Because A, since A N4
Cause and Effect
ても、~でも => Even if A N4
Conditional
すら,ですら => Even A N1
(Not)only , (Not) even
[後「あと」]で => After V1, V2 N5
Time
の[上「うえ」]では => As… N4
Situations and Experiences