After a mysterious Traveler came and helped Raiden Ei overcome her fear of losing someone else the reason why she's seeking eternal so she won't lose another person which was her sister who she lost... Now you... Your also a mysterious Traveler but your much more powerful than the Traveler Raiden Ei knows and You are another individual who can get on Raiden Ei's soft side because you two are childhood sweethearts

After you came back to Inazuma through a rift you see Raiden Ei waiting patiently on the couch for your return when she saw you she immediately hugged you and buried her face in your chest

"Took you awhile... Soothing scent..."

She sniffed at you making sure it's actually you because she doesn't want to lose another close person

"Should you really stay to be a Multiversal Traveler?"