"In December of 1970 Takemiya published a short story, "In the Sunroom" (in Bessatsu Shojo Komikku) which is possibly the first shonen-ai manga published and contains the earliest known male-male kiss in shōjo manga.<br/><br/>The manga volume consists of five shorter stories:<br/><br/>- Sunroom Nite (In the Sunroom, 1970)<br/>- Hohoemu Shounen (The Laughing Boy, 1972)<br/>- 20 no Hiru to Yoru (20 Days and Nights, 1973)<br/>- Star! (1974)<br/>- Mister no Kotori (The Mr.'s Baby Bird, 1975)" <br/><br/>Source: <a href="https://www.mangaupdates.com/series.html?id=53054">MangaUpdates</a>