Fukuzatsu na Kyoudai no 4koma summary: \"Big Sis!?\" \"Kouta!?\" The two of them were enjoying an in-game romance (without knowing each other\'s identities). Upon seeing each other\'s faces at their long-awaited offline meetup... they were both shocked to see that their partner was in fact their own sibling!? These are complicated feelings for sure... and rather hard to accept! (Source: [BookLive](https://booklive.jp/product/index/title_id/20068503/vol_no/001))