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i hate that ik these off the top of my head, im never making it to heaven anyways
just nipples
https://www.mangago.zone/read-manga/yoru_to_asa_no_uta_ec/
fingering, i forgot whether or not there were nipples
https://www.mangago.zone/read-manga/boku_no_xie_mama/
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https://www.mangago.zone/read-manga/what_i_can_t_tell_you/
They switch does that count? In terms of exclusive tops through...I think the top in Sketch is pretty submissive so try there?
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Lmaooo that part is rlly funny bc he's honestly so shocked, I loved Love Sick Dog but be warned there is rape in the later chapters (not between mcs). SPOILER BELOW:
Basically, there is a main antagonist in the story who's the reason that the bottoms mental trauma became worse over time. The dude also isolated him from his gfs, etc. But later on he realizes that he was acc obsessed/felt a twisted form of love for the bottom. He thus rapes the bottom after cornering and isolating him once again. The bottom tops during the rape.
Happy reading, if you're willing! I really enjoyed it but tht part was kinda blegh yk? Esp bc the author tries to give the antagonist a love story later on.
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Nipples sucking:
Shutline
https://www.mangago.zone/read-manga/shutline/
Fingering (he’s a top,,but later becomes a bottom, so it may not quite count)
Nidome ha shoujiki
https://www.mangago.zone/read-manga/nidome_ha_shoujiki/
This is such a shot in the dark but do y'all got any BL where the top gets fingered or gets his nipples sucked?