Rare spelling of ジャイナ教 (“Jainism”).

interest

doctrine, dogma

senility

deep, profound

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

holding, possession / wear, durability

continuative of 持つ

to hold, to carry something / to have, to possess / to hold up, to maintain

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend