Soriku added.
Everyone in the bet must add this to their signature. If you don't have one make one and if yours is too long replace it with this.
Kimi wa ne tashika ni ano toki watashi no soba ni ita
Itsudatte itsudatte itsudatte
Sugu yoko de waratteita
Nakushitemo torimodosu kimi wo
I will never leave you