Taiga Aisaka pictured in the romantic aftermath of the series; the artist, Koku, confesses that he was prompted to draw the scene after wondering whether Taiga’s slight frame could withstand the rigours of pregnancy and childbirth.
He seems to have been reassured she would be OK after completing it, perhaps through the conscientious use of contraception? Note the “Toradora” condom wrappers too…
If you are interested in seeing the romantic (rather than erotic) prelude to this, the same artist has provided an excellent rendition. His Pixiv profile; vote for her on the Channel here.