At first it was probably to keep an eye on her but then that mindset might change when she protected him in the train. Not to mention how much Judith has changed since MC transmigrated into her body. Since Luca's issue with Rudieger is the "sincerity" of Rudi's love and affection to him in the first timeline, when Judith shown genuine love to him in that one month, he got attached. That's how I interpret it tho.
og aunt actually tried to help Luca later in their previous life (and died?) as i remember. he thought his aunt wasn't so bad and wanted to save everyone including her this time.
spoiler about mc
she isn't from another world she actually is the og aunt. she just forgot it was her previous life.
Wait what. I thought she transmigrated into her favourite fantasy novel from modern Korea? Winter in Wynterwald or some shit like that? She even remembered being dissed by her friend for loving revenge story
im so curious why luca is sooo attached to aunt and quite cold to uncle.
i did read spoiler about the aunt inthe previous life. but is that enough reason for luca to bring her in the mansion?