ITZY kicked off their first world tour CHECKMATE in Seoul, attended by fans, family, and fellow K-Pop idols. ITZY | @ITZYofficial/Twitter There was one special guest in particular who touched Lia‘s heart so deeply that she cried. Lia | @itzy.all.in.us/Instagram When it was Lia’s turn to speak, she couldn’t voice her thoughts just yet. She’d begun to…