かつ オタ活 LinksSentence search for オタ活Sentence search for オタかつSentence search for ヲタ活Kanji details for 活Edit in JMdict Noun1. otaku activities; activities related to an otaku's interestsSlang, See also オタクOther formsヲタ活 【オタかつ】 Discussions Log in to talk about this word.