Curable resin, curable resin composition, and cured product

A curable resin (A) comprising both a structure represented by General Formula (1) below and a structure represented by General Formula (2) below:

• in General Formula (1) above, Ra's are each independently an alkyl group, an aryl group, an aralkyl group, or a cycloalkyl group with a carbon number of 1 to 12;
• M is a methacryloyloxy group;
• h and i each independently indicate an integer of 1 to 4;
• and j indicates an integer of 0 to 2,
• in General Formula (2) above, Rb's are each independently a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, or a cycloalkyl group with a carbon number of 1 to 12;
• V is a vinyl group;
• k indicates an integer of 0 to 4;
• 1 indicates an integer of 1 to 4;
• and m indicates an integer of 0 to 2.