Yeah he did want k*ll himself but i think his mother's ghost safe him. Because he think 'i swear i turn off my phone before' so the only make sense that yuichi can get thorough him probably because his mother connected the phone to save him with yuichi. He deserve to be happy after all
I think this manga is so short that most of us kinda forgot the fact that the seme actually considered off himself :'< his whole life was so sad