A thermochromic writing instrument capable of causing curiosity and interest of a user by configuring an eraser to be easily separated from the main body of the thermochromic writing instrument and to be shaped into various character dolls. A rotation member is inserted into a pen body and a hollow upper cover is detachably coupled to an outside of the upper portion of the pen body, a first eraser is connected to the rotation member by a connection member, a connection portion of an operation member is disposed in a groove formed at one side of the side wall of the pen body, the first body portion of the operation member is inserted into the pen body and a clip portion of the operation member is exposed to the outside of the pen body.

A thermochromic writing instrument capable of causing curiosity and interest of a user by configuring an eraser to be easily separated from the main body of the thermochromic writing instrument and to be shaped into various character dolls. A rotation member is inserted into a pen body and a hollow upper cover is detachably coupled to an outside of the upper portion of the pen body, a first eraser is connected to the rotation member by a connection member, a connection portion of an operation member is disposed in a groove formed at one side of the side wall of the pen body, the first body portion of the operation member is inserted into the pen body and a clip portion of the operation member is exposed to the outside of the pen body.

This invention is novel in that it is a new invention for making glued eraser tips or glued eraser attachments. The process for making this invention includes applying glue to the inside of an eraser tip or eraser attachment, then attaching this glued eraser tip or glued eraser attachment to the ferrule/head of the pencil, and then waiting at least 15 minutes or the desired time for this attachment to dry. This product can be sold individually or in kit forms. The product can be sold individually by placing pre-applied glue inside of eraser tips and packaging them. The product can be sold in kit form by having pre-applied glue applied inside the eraser tip and include pencils in the kit; while the other kit form includes providing eraser tips, pencils, and glue for the user to apply the glue inside the eraser tip in the kit.