comment #52797 No, あっ is actually a pretty common spelling in hentai, not strange at all. The っ if you'll notice is smaller than つ the kana, so it is not meant to be pronounced as tsu. This is most often used as an indication that there should be distinct separation of syllables, in romaji it is indicated by a double consonant and only happens with P, T, K, and S kana: ゆっくり :: yukkuri I can only gather that the use of it with the あ means that the the sound is not long and drawn out, but rather, short and staccato.
