Reading again from chapter 1 to see if there were any mention of the imouto only to find out that she was in the next class. Felt kind of strange at first that his sister never shown up to meet him (on purpose or just coincidence) eventhough they are in the same school until the reveal in this...
If I could rate the translation , this will be quite low. A lot of it deviates from the raw. And why did you change the name of the golem from Goreo (ゴレオ) to Tekito?