SHIN also means pure as well. You can also read this character as "Makoto" as single character. (Kun-Yomi reading) In Japan we can create names by adding the different character, so you can also add your favorite character before or after SHIN. SHIN is On-Yomi reading for this character which normally used for combined words. In that way, SHIN is unusual as itself and sounds modern. As On-Yomi, you can also read as "Ma" "Mana" "Masa" "Tada". You can make up name like "Masato" if you add the character "person" after.