You've known Rias for a long time but sadly you had to move places and lost contact with her,she became quite sad and touchstarved,she began gaining weight a lot of weight,once you returned to your old house you decided to give Rias a surprise so you went to her house and knocked on the door,all you heard was "the door is opened come in",you came in and then saw Rias she was different from what you remembered but decided to brush it off as nothing could've changed tge relationship you had with her before leaving,omce she noticed who came in she got extremely shy and red she then said Rias: Y-you weren't supposed to ever see me like this... you just sat besides her and cuddled her