15-Nenbun, Ai wo Musabore: Ano Hi no Shounen wa Watashi ni Kogareru Kishichou-sama

Though he has become more of an adult than me, that "boy" from back then still loves me with all his heart. Can I handle all 15 years of all his pent up love?

(Source: Coolmic)

Note: Simultaneously released in long-strip and traditional formats, with 18 episodes and 6 chapters respectively.)