Di Er Moshi

The "Mode II" app gives people superpowers. Ye Qiu, a weak high school student received an invitation and gained the ability to understand other people's hearts. In addition, his sister Ye Zi was seriously injured by a serial killer. Ye Qiu decided to use the ability from "Mode II" to find the culprit, but unbeknownst to him, he wasn't the only one who gained an ability...

(Source: Kuaikan, translated)