[Bowcan] Ikenai! Luna Sensei R 1 [Digital]

Big breasts (巨乳, kyonyu) is one of the most iconic body-type tags in doujinshi and manga. It refers to female characters with notably large, exaggerated breasts that often serve as a central visual element. Artists typically emphasize size, weight, jiggle physics, cleavage, and breast-focused activities like paizuri (titjobs) and breast play. This tag spans nearly every genre — from vanilla romance to hardcore fetish content. The artistic treatment varies widely: some artists favor realistic proportions while others push into exaggerated territory. Related body-type tags include 'huge breasts' for extreme cases, 'small breasts' for the opposite aesthetic, and 'paizuri' for breast-focused sexual acts. The tag often appears alongside 'sole female' and 'nakadashi' in heterosexual content.

Tankoubon (単行本) indicates that a gallery is a compiled volume or collected edition. Unlike magazine serialization, tankoubon are standalone books that collect chapters or are complete stories. This tag helps readers identify the format of the work. Tankoubon typically have higher production values and more cohesive narratives than magazine chapters.

Story arc indicates that a gallery is part of a multi-chapter narrative. Unlike 'multi-work series' which can be any collection, 'story arc' specifically indicates a continuing storyline with plot progression. Readers looking for narrative-driven content use this tag to find works with developed storylines.