Yubel

Yubel is a minor non-playable character in Fire Emblem: Thracia 776 and a younger brother of Dalsin. He is one of the four children locked up from the Manster soldiers to give to the Lopto Sects.

If you rescue Yubel and took him to the house before Completing Chapter 3, then you can recruit Dalsin in Chapter 4 to see that his younger brother is safe.