One Room Angel (onBLUE comics)

[Machine Translation] No hobbies, no friends, no lover. Nothing worth living for. Koki (in his 30's), a convenience store clerk who lives his life by inertia, is accidentally stabbed by a thug and nearly dies, but in his fading consciousness, he sees a beautiful "angel" with pure white wings. He thought he was being welcomed home, but when he returned home after recovering completely, he found the angel from that time.... Puzzled by the angel's impudent attitude, and taking pity on the fact that she has no memory and cannot fly, she decides to leave the angel at home for a while. The days with the angel, however, sprouted a certain feeling in Koki's heart, who had been living as if he were dead.... What would you call this relationship?

趣味なし、友人なし、恋人なし。生きる価値、なし。惰性で毎日を送っていたコンビニ店員の幸紀(30代)は、うっかりチンピラに刺され瀕死になった折、遠のく意識のなかで、真っ白い羽の美しい「天使」を見たーーー。お迎えかと思いきや、その後すっかり完治して帰宅してみると、そこにはあの時の天使が…。天使のふてぶてしい態度に戸惑いつつ、記憶もなく、飛べないというのを不憫に思い、天使をしばらく家に置くことに。突然はじまった奇妙な同棲生活だったが天使との日々は、死んだように生きていた幸紀の心にある感情を芽吹かせてーー。あなたは、この関係をなんと名付けますか?