Testamentary succession

No, a "death note" is generally not considered a legally binding Will for the purpose of estate succession. 

While a death note can be helpful for providing information and instructions to loved ones, it's an informal document and doesn't have the same legal weight as a formal Will.

A Will is a formal legal document that outlines how a person's assets will be distributed upon their death. 

It must follow specific legal requirements, such as being in writing, signed by the testator (the person making the Will), and witnessed by designated individuals. 

A death note is primarily intended to help loved ones manage the deceased person's affairs after death. 

It may include information such as financial accounts, passwords, contact information for legal and medical professionals, and instructions for handling specific assets. 

State real facts, if any,  other wise it's a hypothetical question. 

What is your dispute / problem / issue ?

Prima facie it is a hypothetical question / moot court topic.

Thank you Sir for your valuable inputs.

A Will should have two witnesses who have to state the will was signed by the testator in their presence. If a suicide note is signed by witnesses they can be charged as abetters to suicide.