How to say I love you in japanese

Daisuki for your friends and the person you like

Aishiteru for a more serious relationship

Koishiteru for the person you want to spend your life with

However..... there's one more

In SnK, we don't say "I love you".

We wait for too long and suddenly our love interest is dead and that's pretty fucking painful

I'm so cruel...... sorry 😞😞