Hmmmm, maaaybe ioi implemented a system where if it is too close to a similar name you can't join to probably reduce scokpuppets.
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